31070664 has 48 divisors (see below), whose sum is σ = 84427200. Its totient is φ = 10322784.

The previous prime is 31070657. The next prime is 31070737. The reversal of 31070664 is 46607013.

It is a super-2 number, since 2×31070664² = 1930772322801792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31117 + ... + 32099.

It is an arithmetic number, because the mean of its divisors is an integer number (1758900).

Almost surely, 2^31070664 is an apocalyptic number.

It is an amenable number.

31070664 is an abundant number, since it is smaller than the sum of its proper divisors (53356536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31070664 is a wasteful number, since it uses less digits than its factorization.

31070664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1427 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 31070664 is about 5574.1065651815. The cubic root of 31070664 is about 314.3765749888.

Adding to 31070664 its reverse (46607013), we get a palindrome (77677677).

The spelling of 31070664 in words is "thirty-one million, seventy thousand, six hundred sixty-four".