31310232220312 has 16 divisors (see below), whose sum is σ = 58712781153600. Its totient is φ = 15653490579360.

The previous prime is 31310232220307. The next prime is 31310232220343. The reversal of 31310232220312 is 21302223201313.

It is a congruent number.

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, 203109487 + ... + 203263582.

It is an arithmetic number, because the mean of its divisors is an integer number (3669548822100).

Almost surely, 2^{31310232220312} is an apocalyptic number.

It is an amenable number.

31310232220312 is a deficient number, since it is larger than the sum of its proper divisors (27402548933288).

31310232220312 is a wasteful number, since it uses less digits than its factorization.

31310232220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406382706 (or 406382702 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31310232220312 its reverse (21302223201313), we get a palindrome (52612455421625).

The spelling of 31310232220312 in words is "thirty-one trillion, three hundred ten billion, two hundred thirty-two million, two hundred twenty thousand, three hundred twelve".