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131083398 = 2327282411
BaseRepresentation
bin1111101000000…
…10110010000110
3100010122201121200
413310002302012
5232024132043
621001323330
73151122225
oct764026206
9303581550
10131083398
1167aa1996
1237a96546
1321207954
14135a2cbc
15b7947d3
hex7d02c86

131083398 has 12 divisors (see below), whose sum is σ = 284014068. Its totient is φ = 43694460.

The previous prime is 131083397. The next prime is 131083411. The reversal of 131083398 is 893380131.

131083398 is a `hidden beast` number, since 1 + 310 + 8 + 339 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131083397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3641188 + ... + 3641223.

It is an arithmetic number, because the mean of its divisors is an integer number (23667839).

Almost surely, 2131083398 is an apocalyptic number.

131083398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

131083398 is an abundant number, since it is smaller than the sum of its proper divisors (152930670).

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

131083398 is a wasteful number, since it uses less digits than its factorization.

131083398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282419 (or 7282416 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 131083398 is about 11449.1658211417. The cubic root of 131083398 is about 507.9830604846.

The spelling of 131083398 in words is "one hundred thirty-one million, eighty-three thousand, three hundred ninety-eight".

Divisors: 1 2 3 6 9 18 7282411 14564822 21847233 43694466 65541699 131083398