634268931 has 4 divisors (see below), whose sum is σ = 845691912. Its totient is φ = 422845952.

The previous prime is 634268923. The next prime is 634268951. The reversal of 634268931 is 139862436.

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 634268931 - 2³ = 634268923 is a prime.

It is a super-2 number, since 2×634268931² = 804594153663765522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634268951) 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, 105711486 + ... + 105711491.

It is an arithmetic number, because the mean of its divisors is an integer number (211422978).

Almost surely, 2^634268931 is an apocalyptic number.

634268931 is a deficient number, since it is larger than the sum of its proper divisors (211422981).

634268931 is a wasteful number, since it uses less digits than its factorization.

634268931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211422980.

The product of its digits is 186624, while the sum is 42.

The square root of 634268931 is about 25184.6963650547. The cubic root of 634268931 is about 859.1938231149.

The spelling of 634268931 in words is "six hundred thirty-four million, two hundred sixty-eight thousand, nine hundred thirty-one".