31020231012212 has 24 divisors (see below), whose sum is σ = 58462306185696. Its totient is φ = 14316759921888.

The previous prime is 31020231012181. The next prime is 31020231012227. The reversal of 31020231012212 is 21221013202013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2820878 + ... + 8366469.

It is an arithmetic number, because the mean of its divisors is an integer number (2435929424404).

Almost surely, 2^{31020231012212} is an apocalyptic number.

It is an amenable number.

31020231012212 is a deficient number, since it is larger than the sum of its proper divisors (27442075173484).

31020231012212 is a wasteful number, since it uses less digits than its factorization.

31020231012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11240687 (or 11240685 counting only the distinct ones).

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

Adding to 31020231012212 its reverse (21221013202013), we get a palindrome (52241244214225).

The spelling of 31020231012212 in words is "thirty-one trillion, twenty billion, two hundred thirty-one million, twelve thousand, two hundred twelve".