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13131348400 = 2452197921871
BaseRepresentation
bin11000011101011000…
…00111100110110000
31020220010221121121001
430032230013212300
5203343111122100
610011002211344
7643256422402
oct141654074660
936803847531
1013131348400
115629338455
1226657b3b54
131313670151
148c7d9ab72
1551cc49d6a
hex30eb079b0

13131348400 has 120 divisors (see below), whose sum is σ = 33630387200. Its totient is φ = 4912876800.

The previous prime is 13131348389. The next prime is 13131348407. The reversal of 13131348400 is 484313131.

It is not an unprimeable number, because it can be changed into a prime (13131348407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 589465 + ... + 611335.

Almost surely, 213131348400 is an apocalyptic number.

13131348400 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 13131348400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16815193600).

13131348400 is an abundant number, since it is smaller than the sum of its proper divisors (20499038800).

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

13131348400 is a wasteful number, since it uses less digits than its factorization.

13131348400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21987 (or 21976 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 13131348400 in words is "thirteen billion, one hundred thirty-one million, three hundred forty-eight thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 19 20 25 38 40 50 76 79 80 95 100 152 158 190 200 304 316 380 395 400 475 632 760 790 950 1264 1501 1520 1580 1900 1975 3002 3160 3800 3950 6004 6320 7505 7600 7900 12008 15010 15800 21871 24016 30020 31600 37525 43742 60040 75050 87484 109355 120080 150100 174968 218710 300200 349936 415549 437420 546775 600400 831098 874840 1093550 1662196 1727809 1749680 2077745 2187100 3324392 3455618 4155490 4374200 6648784 6911236 8310980 8639045 8748400 10388725 13822472 16621960 17278090 20777450 27644944 32828371 33243920 34556180 41554900 43195225 65656742 69112360 83109800 86390450 131313484 138224720 164141855 166219600 172780900 262626968 328283710 345561800 525253936 656567420 691123600 820709275 1313134840 1641418550 2626269680 3282837100 6565674200 13131348400