2564356231 has 4 divisors (see below), whose sum is σ = 2564910832. Its totient is φ = 2563801632.

The previous prime is 2564356183. The next prime is 2564356241. The reversal of 2564356231 is 1326534652.

2564356231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2564356231 - 2¹⁹ = 2563831943 is a prime.

It is a super-2 number, since 2×2564356231² = 13151845758937050722, 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 (2564356241) 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, 270306 + ... + 279631.

It is an arithmetic number, because the mean of its divisors is an integer number (641227708).

Almost surely, 2^2564356231 is an apocalyptic number.

2564356231 is a deficient number, since it is larger than the sum of its proper divisors (554601).

2564356231 is an equidigital number, since it uses as much as digits as its factorization.

2564356231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554600.

The product of its digits is 129600, while the sum is 37.

The square root of 2564356231 is about 50639.4730521557. The cubic root of 2564356231 is about 1368.7562603607.

The spelling of 2564356231 in words is "two billion, five hundred sixty-four million, three hundred fifty-six thousand, two hundred thirty-one".