2256632731 has 4 divisors (see below), whose sum is σ = 2258897152. Its totient is φ = 2254368312.

The previous prime is 2256632723. The next prime is 2256632771. The reversal of 2256632731 is 1372366522.

2256632731 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 2256632731 - 2³ = 2256632723 is a prime.

It is a super-2 number, since 2×2256632731² = 10184782565241036722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256632711) 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, 1130715 + ... + 1132708.

It is an arithmetic number, because the mean of its divisors is an integer number (564724288).

Almost surely, 2^2256632731 is an apocalyptic number.

2256632731 is a deficient number, since it is larger than the sum of its proper divisors (2264421).

2256632731 is an equidigital number, since it uses as much as digits as its factorization.

2256632731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264420.

The product of its digits is 90720, while the sum is 37.

The square root of 2256632731 is about 47504.0285765323. The cubic root of 2256632731 is about 1311.6570393212.

The spelling of 2256632731 in words is "two billion, two hundred fifty-six million, six hundred thirty-two thousand, seven hundred thirty-one".