31816325268 has 144 divisors (see below), whose sum is σ = 99381050496. Its totient is φ = 8357472000.

The previous prime is 31816325251. The next prime is 31816325269. The reversal of 31816325268 is 86252361813.

31816325268 is a `hidden beast` number, since 3 + 1 + 8 + 1 + 632 + 5 + 2 + 6 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31816325269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 802930 + ... + 841622.

It is an arithmetic number, because the mean of its divisors is an integer number (690146184).

Almost surely, 2^31816325268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31816325268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49690525248).

31816325268 is an abundant number, since it is smaller than the sum of its proper divisors (67564725228).

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

31816325268 is a wasteful number, since it uses less digits than its factorization.

31816325268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38974 (or 38969 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 31816325268 in words is "thirty-one billion, eight hundred sixteen million, three hundred twenty-five thousand, two hundred sixty-eight".