31001320222112 has 24 divisors (see below), whose sum is σ = 61034529096576. Its totient is φ = 15500487435712.

The previous prime is 31001320222111. The next prime is 31001320222123. The reversal of 31001320222112 is 21122202310013.

It is a super-2 number, since 2×31001320222112² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31001320222111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2453978 + ... + 8247705.

It is an arithmetic number, because the mean of its divisors is an integer number (2543105379024).

Almost surely, 2^{31001320222112} is an apocalyptic number.

31001320222112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31001320222112 is a deficient number, since it is larger than the sum of its proper divisors (30033208874464).

31001320222112 is a wasteful number, since it uses less digits than its factorization.

31001320222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10792220 (or 10792212 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31001320222112 its reverse (21122202310013), we get a palindrome (52123522532125).

The spelling of 31001320222112 in words is "thirty-one trillion, one billion, three hundred twenty million, two hundred twenty-two thousand, one hundred twelve".