31919023641344 has 72 divisors (see below), whose sum is σ = 72817976824320. Its totient is φ = 13679073543168.

The previous prime is 31919023641331. The next prime is 31919023641403. The reversal of 31919023641344 is 44314632091913.

It is a happy number.

It is a super-2 number, since 2×31919023641344² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31919023641292 and 31919023641301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50079737 + ... + 50713095.

Almost surely, 2^{31919023641344} is an apocalyptic number.

It is an amenable number.

31919023641344 is an abundant number, since it is smaller than the sum of its proper divisors (40898953182976).

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

31919023641344 is an equidigital number, since it uses as much as digits as its factorization.

31919023641344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661505 (or 661491 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 31919023641344 in words is "thirty-one trillion, nine hundred nineteen billion, twenty-three million, six hundred forty-one thousand, three hundred forty-four".