31359738368 has 40 divisors (see below), whose sum is σ = 71609410752. Its totient is φ = 13439886336.

The previous prime is 31359738349. The next prime is 31359738383. The reversal of 31359738368 is 86383795313.

It is a happy number.

It is a super-2 number, since 2×31359738368² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4371380 + ... + 4378547.

Almost surely, 2^31359738368 is an apocalyptic number.

It is an amenable number.

31359738368 is an abundant number, since it is smaller than the sum of its proper divisors (40249672384).

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

31359738368 is an frugal number, since it uses more digits than its factorization.

31359738368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8749952 (or 8749936 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 56.

The spelling of 31359738368 in words is "thirty-one billion, three hundred fifty-nine million, seven hundred thirty-eight thousand, three hundred sixty-eight".