31604461 has 24 divisors (see below), whose sum is σ = 39726720. Its totient is φ = 24992352.

The previous prime is 31604453. The next prime is 31604497. The reversal of 31604461 is 16440613.

It is not a de Polignac number, because 31604461 - 2³ = 31604453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31604561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32200 + ... + 33166.

It is an arithmetic number, because the mean of its divisors is an integer number (1655280).

Almost surely, 2^31604461 is an apocalyptic number.

It is an amenable number.

31604461 is a deficient number, since it is larger than the sum of its proper divisors (8122259).

31604461 is a wasteful number, since it uses less digits than its factorization.

31604461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 31604461 is about 5621.7845031627. The cubic root of 31604461 is about 316.1667022205.

The spelling of 31604461 in words is "thirty-one million, six hundred four thousand, four hundred sixty-one".