31896064 has 20 divisors (see below), whose sum is σ = 63730854. Its totient is φ = 15947776.

The previous prime is 31896061. The next prime is 31896071. The reversal of 31896064 is 46069813.

It can be written as a sum of positive squares in only one way, i.e., 29073664 + 2822400 = 5392^2 + 1680^2 .

It is not an unprimeable number, because it can be changed into a prime (31896061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30637 + ... + 31660.

Almost surely, 2^31896064 is an apocalyptic number.

It is an amenable number.

31896064 is a deficient number, since it is larger than the sum of its proper divisors (31834790).

31896064 is an frugal number, since it uses more digits than its factorization.

31896064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62315 (or 62299 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 31896064 is about 5647.6600464263. The cubic root of 31896064 is about 317.1361123397.

The spelling of 31896064 in words is "thirty-one million, eight hundred ninety-six thousand, sixty-four".