31324464400 has 30 divisors (see below), whose sum is σ = 75257026682. Its totient is φ = 12529785600.

The previous prime is 31324464307. The next prime is 31324464481. The reversal of 31324464400 is 446442313.

It can be written as a sum of positive squares in 3 ways, for example, as 6161622016 + 25162842384 = 78496^2 + 158628^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39155181 + ... + 39155980.

Almost surely, 2^31324464400 is an apocalyptic number.

It is an amenable number.

31324464400 is an abundant number, since it is smaller than the sum of its proper divisors (43932562282).

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

31324464400 is a wasteful number, since it uses less digits than its factorization.

31324464400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78311179 (or 78311168 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 31324464400 in words is "thirty-one billion, three hundred twenty-four million, four hundred sixty-four thousand, four hundred".