31604612 has 24 divisors (see below), whose sum is σ = 60240600. Its totient is φ = 14420736.

The previous prime is 31604611. The next prime is 31604627. The reversal of 31604612 is 21640613.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 31516996 = 296^2 + 5614^2 .

It is not an unprimeable number, because it can be changed into a prime (31604611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214 + ... + 8042.

It is an arithmetic number, because the mean of its divisors is an integer number (2510025).

Almost surely, 2^31604612 is an apocalyptic number.

It is an amenable number.

31604612 is a deficient number, since it is larger than the sum of its proper divisors (28635988).

31604612 is a wasteful number, since it uses less digits than its factorization.

31604612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935 (or 6933 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 31604612 is about 5621.7979330460. The cubic root of 31604612 is about 316.1672057475.

The spelling of 31604612 in words is "thirty-one million, six hundred four thousand, six hundred twelve".