31000113321002 has 96 divisors (see below), whose sum is σ = 57472051367808. Its totient is φ = 12461032356864.

The previous prime is 31000113320987. The next prime is 31000113321007. The reversal of 31000113321002 is 20012331100013.

It is a super-2 number, since 2×31000113321002² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (31000113321007) 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, 1067739878 + ... + 1067768910.

It is an arithmetic number, because the mean of its divisors is an integer number (598667201748).

Almost surely, 2^{31000113321002} is an apocalyptic number.

31000113321002 is a deficient number, since it is larger than the sum of its proper divisors (26471938046806).

31000113321002 is a wasteful number, since it uses less digits than its factorization.

31000113321002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31260 (or 31253 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31000113321002 its reverse (20012331100013), we get a palindrome (51012444421015).

The spelling of 31000113321002 in words is "thirty-one trillion, one hundred thirteen million, three hundred twenty-one thousand, two".