31780053168 has 80 divisors (see below), whose sum is σ = 85890502656. Its totient is φ = 10115054080.

The previous prime is 31780053131. The next prime is 31780053169. The reversal of 31780053168 is 86135008713.

It is not an unprimeable number, because it can be changed into a prime (31780053169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79296 + ... + 264287.

Almost surely, 2^31780053168 is an apocalyptic number.

It is an amenable number.

31780053168 is an abundant number, since it is smaller than the sum of its proper divisors (54110449488).

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

31780053168 is a wasteful number, since it uses less digits than its factorization.

31780053168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343682 (or 343676 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 31780053168 in words is "thirty-one billion, seven hundred eighty million, fifty-three thousand, one hundred sixty-eight".