131075928 has 32 divisors (see below), whose sum is σ = 364100400. Its totient is φ = 43691904.

The previous prime is 131075921. The next prime is 131075977. The reversal of 131075928 is 829570131.

It is a super-2 number, since 2×131075928² = 34361797802122368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 131075892 and 131075901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131075921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303201 + ... + 303632.

Almost surely, 2^131075928 is an apocalyptic number.

131075928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

131075928 is an abundant number, since it is smaller than the sum of its proper divisors (233024472).

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

131075928 is a wasteful number, since it uses less digits than its factorization.

131075928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606848 (or 606838 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 131075928 is about 11448.8395918538. The cubic root of 131075928 is about 507.9734108885.

The spelling of 131075928 in words is "one hundred thirty-one million, seventy-five thousand, nine hundred twenty-eight".