31310020220122 has 192 divisors, whose sum is σ = 58027135097088. Its totient is φ = 12399149260800.

The previous prime is 31310020220081. The next prime is 31310020220137. The reversal of 31310020220122 is 22102202001313.

It is a self number, because there is not a number n which added to its sum of digits gives 31310020220122.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17520995313 + ... + 17520997099.

It is an arithmetic number, because the mean of its divisors is an integer number (302224661964).

Almost surely, 2^{31310020220122} is an apocalyptic number.

31310020220122 is a deficient number, since it is larger than the sum of its proper divisors (26717114876966).

31310020220122 is a wasteful number, since it uses less digits than its factorization.

31310020220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31310020220122 its reverse (22102202001313), we get a palindrome (53412222221435).

The spelling of 31310020220122 in words is "thirty-one trillion, three hundred ten billion, twenty million, two hundred twenty thousand, one hundred twenty-two".