31224377664 has 70 divisors (see below), whose sum is σ = 92558852474. Its totient is φ = 10408124160.

The previous prime is 31224377627. The next prime is 31224377687. The reversal of 31224377664 is 46677342213.

It can be written as a sum of positive squares in only one way, i.e., 28897280064 + 2327097600 = 169992^2 + 48240^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3006427 + ... + 3016794.

Almost surely, 2^31224377664 is an apocalyptic number.

It is an amenable number.

31224377664 is an abundant number, since it is smaller than the sum of its proper divisors (61334474810).

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

31224377664 is an equidigital number, since it uses as much as digits as its factorization.

31224377664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023245 (or 6023226 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The spelling of 31224377664 in words is "thirty-one billion, two hundred twenty-four million, three hundred seventy-seven thousand, six hundred sixty-four".