461393631 has 8 divisors (see below), whose sum is σ = 683546160. Its totient is φ = 307595736.

The previous prime is 461393609. The next prime is 461393633. The reversal of 461393631 is 136393164.

461393631 is a `hidden beast` number, since 4 + 6 + 13 + 9 + 3 + 631 = 666.

It is not a de Polignac number, because 461393631 - 2⁵ = 461393599 is a prime.

It is a super-2 number, since 2×461393631² = 425768165454728322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461393633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8544300 + ... + 8544353.

It is an arithmetic number, because the mean of its divisors is an integer number (85443270).

Almost surely, 2^461393631 is an apocalyptic number.

461393631 is a deficient number, since it is larger than the sum of its proper divisors (222152529).

461393631 is a wasteful number, since it uses less digits than its factorization.

461393631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17088662 (or 17088656 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 461393631 is about 21480.0752093655. The cubic root of 461393631 is about 772.7230461595.

It can be divided in two parts, 46139 and 3631, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 461393631 in words is "four hundred sixty-one million, three hundred ninety-three thousand, six hundred thirty-one".