65456131 has 16 divisors (see below), whose sum is σ = 72662688. Its totient is φ = 58579200.

The previous prime is 65456123. The next prime is 65456173. The reversal of 65456131 is 13165456.

It is a cyclic number.

It is not a de Polignac number, because 65456131 - 2³ = 65456123 is a prime.

It is a super-2 number, since 2×65456131² = 8569010170978322, 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 = 65456093 and 65456102.

It is not an unprimeable number, because it can be changed into a prime (65456231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120721 + ... + 121261.

It is an arithmetic number, because the mean of its divisors is an integer number (4541418).

Almost surely, 2^65456131 is an apocalyptic number.

65456131 is a deficient number, since it is larger than the sum of its proper divisors (7206557).

65456131 is a wasteful number, since it uses less digits than its factorization.

65456131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

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

The square root of 65456131 is about 8090.4963382972. The cubic root of 65456131 is about 403.0108858022.

The spelling of 65456131 in words is "sixty-five million, four hundred fifty-six thousand, one hundred thirty-one".