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131027380 = 22511595579
BaseRepresentation
bin1111100111101…
…01000110110100
3100010112212202221
413303311012310
5232020334010
621000212124
73150500011
oct763650664
9303485687
10131027380
1167a638a0
1237a6a044
13211b82c3
141358a708
15b782dda
hex7cf51b4

131027380 has 24 divisors (see below), whose sum is σ = 300172320. Its totient is φ = 47646240.

The previous prime is 131027357. The next prime is 131027419. The reversal of 131027380 is 83720131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297570 + ... + 298009.

It is an arithmetic number, because the mean of its divisors is an integer number (12507180).

Almost surely, 2131027380 is an apocalyptic number.

131027380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131027380 is an abundant number, since it is smaller than the sum of its proper divisors (169144940).

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

131027380 is a wasteful number, since it uses less digits than its factorization.

131027380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595599 (or 595597 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 131027380 is about 11446.7191806211. The cubic root of 131027380 is about 507.9106886205.

The spelling of 131027380 in words is "one hundred thirty-one million, twenty-seven thousand, three hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 595579 1191158 2382316 2977895 5955790 6551369 11911580 13102738 26205476 32756845 65513690 131027380