634461731 has 4 divisors (see below), whose sum is σ = 634524864. Its totient is φ = 634398600.

The previous prime is 634461727. The next prime is 634461733. The reversal of 634461731 is 137164436.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 634461731 - 2² = 634461727 is a prime.

It is a super-2 number, since 2×634461731² = 805083376207032722, 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 = 634461691 and 634461700.

It is not an unprimeable number, because it can be changed into a prime (634461733) 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, 12755 + ... + 37836.

It is an arithmetic number, because the mean of its divisors is an integer number (158631216).

Almost surely, 2^634461731 is an apocalyptic number.

634461731 is a deficient number, since it is larger than the sum of its proper divisors (63133).

634461731 is a wasteful number, since it uses less digits than its factorization.

634461731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63132.

The product of its digits is 36288, while the sum is 35.

The square root of 634461731 is about 25188.5237955701. The cubic root of 634461731 is about 859.2808712524.

The spelling of 634461731 in words is "six hundred thirty-four million, four hundred sixty-one thousand, seven hundred thirty-one".