3181972705352 has 64 divisors (see below), whose sum is σ = 6839316362880. Its totient is φ = 1359543601152.

The previous prime is 3181972705333. The next prime is 3181972705397. The reversal of 3181972705352 is 2535072791813.

It is a junction number, because it is equal to n+sod(n) for n = 3181972705294 and 3181972705303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107582438 + ... + 107612010.

It is an arithmetic number, because the mean of its divisors is an integer number (106864318170).

Almost surely, 2^{3181972705352} is an apocalyptic number.

It is an amenable number.

3181972705352 is an abundant number, since it is smaller than the sum of its proper divisors (3657343657528).

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

3181972705352 is a wasteful number, since it uses less digits than its factorization.

3181972705352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35382 (or 35378 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 3181972705352 in words is "three trillion, one hundred eighty-one billion, nine hundred seventy-two million, seven hundred five thousand, three hundred fifty-two".