131125157 has 4 divisors (see below), whose sum is σ = 131154816. Its totient is φ = 131095500.

The previous prime is 131125123. The next prime is 131125193. The reversal of 131125157 is 751521131.

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 not a de Polignac number, because 131125157 - 2²⁴ = 114347941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131125117) 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, 6719 + ... + 17532.

It is an arithmetic number, because the mean of its divisors is an integer number (32788704).

Almost surely, 2^131125157 is an apocalyptic number.

It is an amenable number.

131125157 is a deficient number, since it is larger than the sum of its proper divisors (29659).

131125157 is an equidigital number, since it uses as much as digits as its factorization.

131125157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29658.

The product of its digits is 1050, while the sum is 26.

The square root of 131125157 is about 11450.9893459037. The cubic root of 131125157 is about 508.0369971711.

Adding to 131125157 its reverse (751521131), we get a palindrome (882646288).

The spelling of 131125157 in words is "one hundred thirty-one million, one hundred twenty-five thousand, one hundred fifty-seven".