31020303212112 has 40 divisors (see below), whose sum is σ = 80712299741920. Its totient is φ = 10265711852160.

The previous prime is 31020303212099. The next prime is 31020303212117. The reversal of 31020303212112 is 21121230302013.

It is a super-2 number, since 2×31020303212112² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020303212117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2324656339 + ... + 2324669682.

It is an arithmetic number, because the mean of its divisors is an integer number (2017807493548).

Almost surely, 2^{31020303212112} is an apocalyptic number.

It is an amenable number.

31020303212112 is an abundant number, since it is smaller than the sum of its proper divisors (49691996529808).

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

31020303212112 is a wasteful number, since it uses less digits than its factorization.

31020303212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649326171 (or 4649326165 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31020303212112 its reverse (21121230302013), we get a palindrome (52141533514125).

The spelling of 31020303212112 in words is "thirty-one trillion, twenty billion, three hundred three million, two hundred twelve thousand, one hundred twelve".