131125057 has 4 divisors (see below), whose sum is σ = 149857216. Its totient is φ = 112392900.

The previous prime is 131125039. The next prime is 131125073. The reversal of 131125057 is 750521131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131125057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131126057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9366069 + ... + 9366082.

It is an arithmetic number, because the mean of its divisors is an integer number (37464304).

Almost surely, 2^131125057 is an apocalyptic number.

It is an amenable number.

131125057 is a deficient number, since it is larger than the sum of its proper divisors (18732159).

131125057 is an equidigital number, since it uses as much as digits as its factorization.

131125057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18732158.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 131125057 is about 11450.9849794679. The cubic root of 131125057 is about 508.0368680230.

Adding to 131125057 its reverse (750521131), we get a palindrome (881646188).

The spelling of 131125057 in words is "one hundred thirty-one million, one hundred twenty-five thousand, fifty-seven".