656252131 has 8 divisors (see below), whose sum is σ = 667051200. Its totient is φ = 645515520.

The previous prime is 656252101. The next prime is 656252147. The reversal of 656252131 is 131252656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 656252131 - 2⁵ = 656252099 is a prime.

It is a super-2 number, since 2×656252131² = 861333718884082322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656252093 and 656252102.

It is not an unprimeable number, because it can be changed into a prime (656252101) 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 7 ways as a sum of consecutive naturals, for example, 5811 + ... + 36691.

It is an arithmetic number, because the mean of its divisors is an integer number (83381400).

Almost surely, 2^656252131 is an apocalyptic number.

656252131 is a deficient number, since it is larger than the sum of its proper divisors (10799069).

656252131 is a wasteful number, since it uses less digits than its factorization.

656252131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31229.

The product of its digits is 10800, while the sum is 31.

The square root of 656252131 is about 25617.4185077263. The cubic root of 656252131 is about 869.0076018444.

The spelling of 656252131 in words is "six hundred fifty-six million, two hundred fifty-two thousand, one hundred thirty-one".