131392757 has 4 divisors (see below), whose sum is σ = 131417676. Its totient is φ = 131367840.

The previous prime is 131392753. The next prime is 131392759. The reversal of 131392757 is 757293131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50140561 + 81252196 = 7081^2 + 9014^2 .

It is a cyclic number.

It is not a de Polignac number, because 131392757 - 2² = 131392753 is a prime.

It is a super-2 number, since 2×131392757² = 34528113184122098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131392757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131392753) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1094 + ... + 16247.

It is an arithmetic number, because the mean of its divisors is an integer number (32854419).

Almost surely, 2^131392757 is an apocalyptic number.

It is an amenable number.

131392757 is a deficient number, since it is larger than the sum of its proper divisors (24919).

131392757 is an equidigital number, since it uses as much as digits as its factorization.

131392757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24918.

The product of its digits is 39690, while the sum is 38.

The square root of 131392757 is about 11462.6679704160. The cubic root of 131392757 is about 508.3823626871.

The spelling of 131392757 in words is "one hundred thirty-one million, three hundred ninety-two thousand, seven hundred fifty-seven".