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131016828460 = 22576127115659
BaseRepresentation
bin111101000000100110…
…1100010011000101100
3110112011210021111001011
41322001031202120230
54121310302002320
6140104401155004
712315501444550
oct1720115423054
9415153244034
10131016828460
1150622647431
122148532ba64
13c47c75468b
1464ac557860
15361c26b05a
hex1e8136262c

131016828460 has 96 divisors (see below), whose sum is σ = 319769533440. Its totient is φ = 44159558400.

The previous prime is 131016828457. The next prime is 131016828463. The reversal of 131016828460 is 64828610131.

It is an interprime number because it is at equal distance from previous prime (131016828457) and next prime (131016828463).

It is not an unprimeable number, because it can be changed into a prime (131016828463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23149111 + ... + 23154769.

It is an arithmetic number, because the mean of its divisors is an integer number (3330932640).

Almost surely, 2131016828460 is an apocalyptic number.

131016828460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131016828460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159884766720).

131016828460 is an abundant number, since it is smaller than the sum of its proper divisors (188752704980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131016828460 is a wasteful number, since it uses less digits than its factorization.

131016828460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8447 (or 8445 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 131016828460 in words is "one hundred thirty-one billion, sixteen million, eight hundred twenty-eight thousand, four hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 61 70 122 140 244 305 427 610 854 1220 1708 2135 2711 4270 5422 5659 8540 10844 11318 13555 18977 22636 27110 28295 37954 39613 54220 56590 75908 79226 94885 113180 158452 165371 189770 198065 330742 345199 379540 396130 661484 690398 792260 826855 1157597 1380796 1653710 1725995 2315194 2416393 3307420 3451990 4630388 4832786 5787985 6903980 9665572 11575970 12081965 15341549 23151940 24163930 30683098 48327860 61366196 76707745 107390843 153415490 214781686 306830980 429563372 536954215 935834489 1073908430 1871668978 2147816860 3743337956 4679172445 6550841423 9358344890 13101682846 18716689780 26203365692 32754207115 65508414230 131016828460