131495937 has 4 divisors (see below), whose sum is σ = 175327920. Its totient is φ = 87663956.

The previous prime is 131495911. The next prime is 131495939. The reversal of 131495937 is 739594131.

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 131495937 - 2⁸ = 131495681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131495939) 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 3 ways as a sum of consecutive naturals, for example, 21915987 + ... + 21915992.

It is an arithmetic number, because the mean of its divisors is an integer number (43831980).

Almost surely, 2^131495937 is an apocalyptic number.

It is an amenable number.

131495937 is a deficient number, since it is larger than the sum of its proper divisors (43831983).

131495937 is an equidigital number, since it uses as much as digits as its factorization.

131495937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43831982.

The product of its digits is 102060, while the sum is 42.

The square root of 131495937 is about 11467.1677845927. The cubic root of 131495937 is about 508.5154019017.

The spelling of 131495937 in words is "one hundred thirty-one million, four hundred ninety-five thousand, nine hundred thirty-seven".