31329064 has 16 divisors (see below), whose sum is σ = 63260820. Its totient is φ = 14459520.

The previous prime is 31329061. The next prime is 31329073. The reversal of 31329064 is 46092313.

It can be written as a sum of positive squares in 2 ways, for example, as 29484900 + 1844164 = 5430^2 + 1358^2 .

It is a super-2 number, since 2×31329064² = 1963020502232192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31329061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150517 + ... + 150724.

Almost surely, 2^31329064 is an apocalyptic number.

It is an amenable number.

31329064 is an abundant number, since it is smaller than the sum of its proper divisors (31931756).

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

31329064 is a wasteful number, since it uses less digits than its factorization.

31329064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301260 (or 301256 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 31329064 is about 5597.2371756073. The cubic root of 31329064 is about 315.2456771565.

The spelling of 31329064 in words is "thirty-one million, three hundred twenty-nine thousand, sixty-four".