31378303168 has 56 divisors (see below), whose sum is σ = 65487864960. Its totient is φ = 14896527360.

The previous prime is 31378303153. The next prime is 31378303189. The reversal of 31378303168 is 86130387313.

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, 44053 + ... + 254356.

It is an arithmetic number, because the mean of its divisors is an integer number (1169426160).

Almost surely, 2^31378303168 is an apocalyptic number.

It is an amenable number.

31378303168 is an abundant number, since it is smaller than the sum of its proper divisors (34109561792).

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

31378303168 is a wasteful number, since it uses less digits than its factorization.

31378303168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298505 (or 298495 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 31378303168 in words is "thirty-one billion, three hundred seventy-eight million, three hundred three thousand, one hundred sixty-eight".