264156231 has 4 divisors (see below), whose sum is σ = 352208312. Its totient is φ = 176104152.

The previous prime is 264156203. The next prime is 264156241. The reversal of 264156231 is 132651462.

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

It is not a de Polignac number, because 264156231 - 2⁵ = 264156199 is a prime.

It is a super-2 number, since 2×264156231² = 139557028752250722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264156241) 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, 44026036 + ... + 44026041.

It is an arithmetic number, because the mean of its divisors is an integer number (88052078).

Almost surely, 2^264156231 is an apocalyptic number.

264156231 is a deficient number, since it is larger than the sum of its proper divisors (88052081).

264156231 is an equidigital number, since it uses as much as digits as its factorization.

264156231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88052080.

The product of its digits is 8640, while the sum is 30.

The square root of 264156231 is about 16252.8837748875. The cubic root of 264156231 is about 641.6333855642.

The spelling of 264156231 in words is "two hundred sixty-four million, one hundred fifty-six thousand, two hundred thirty-one".