31381067376 has 60 divisors (see below), whose sum is σ = 90656429760. Its totient is φ = 10122923520.

The previous prime is 31381067353. The next prime is 31381067387. The reversal of 31381067376 is 67376018313.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3510441 + ... + 3519368.

It is an arithmetic number, because the mean of its divisors is an integer number (1510940496).

Almost surely, 2^31381067376 is an apocalyptic number.

31381067376 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31381067376 is an abundant number, since it is smaller than the sum of its proper divisors (59275362384).

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

31381067376 is a wasteful number, since it uses less digits than its factorization.

31381067376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7029854 (or 7029845 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 31381067376 in words is "thirty-one billion, three hundred eighty-one million, sixty-seven thousand, three hundred seventy-six".