131038656 has 56 divisors (see below), whose sum is σ = 396240000. Its totient is φ = 37439232.

The previous prime is 131038639. The next prime is 131038717. The reversal of 131038656 is 656830131.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×131038656² = 34342258732572672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47406 + ... + 50093.

Almost surely, 2^131038656 is an apocalyptic number.

131038656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131038656 is an abundant number, since it is smaller than the sum of its proper divisors (265201344).

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

131038656 is an equidigital number, since it uses as much as digits as its factorization.

131038656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97521 (or 97511 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 131038656 is about 11447.2117129020. The cubic root of 131038656 is about 507.9252581877.

Adding to 131038656 its reverse (656830131), we get a palindrome (787868787).

The spelling of 131038656 in words is "one hundred thirty-one million, thirty-eight thousand, six hundred fifty-six".