131656307 has 4 divisors (see below), whose sum is σ = 131781456. Its totient is φ = 131531160.

The previous prime is 131656297. The next prime is 131656309. The reversal of 131656307 is 703656131.

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

It is a cyclic number.

It is not a de Polignac number, because 131656307 - 2⁸ = 131656051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131656309) 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, 60983 + ... + 63104.

It is an arithmetic number, because the mean of its divisors is an integer number (32945364).

Almost surely, 2^131656307 is an apocalyptic number.

131656307 is a deficient number, since it is larger than the sum of its proper divisors (125149).

131656307 is a wasteful number, since it uses less digits than its factorization.

131656307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125148.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 131656307 is about 11474.1582262055. The cubic root of 131656307 is about 508.7220432291.

The spelling of 131656307 in words is "one hundred thirty-one million, six hundred fifty-six thousand, three hundred seven".