31467664 has 20 divisors (see below), whose sum is σ = 62456940. Its totient is φ = 15349760.

The previous prime is 31467647. The next prime is 31467677. The reversal of 31467664 is 46676413.

It can be written as a sum of positive squares in 2 ways, for example, as 11289600 + 20178064 = 3360^2 + 4492^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23329 + ... + 24640.

It is an arithmetic number, because the mean of its divisors is an integer number (3122847).

Almost surely, 2^31467664 is an apocalyptic number.

It is an amenable number.

31467664 is a deficient number, since it is larger than the sum of its proper divisors (30989276).

31467664 is a wasteful number, since it uses less digits than its factorization.

31467664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48018 (or 48012 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 31467664 is about 5609.6046206484. The cubic root of 31467664 is about 315.7098763206.

It can be divided in two parts, 31467 and 664, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 31467664 in words is "thirty-one million, four hundred sixty-seven thousand, six hundred sixty-four".