31310111112 has 32 divisors (see below), whose sum is σ = 89457460800. Its totient is φ = 8945745984.

The previous prime is 31310111101. The next prime is 31310111141. The reversal of 31310111112 is 21111101313.

It is a junction number, because it is equal to n+sod(n) for n = 31310111091 and 31310111100.

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, 93184687 + ... + 93185022.

It is an arithmetic number, because the mean of its divisors is an integer number (2795545650).

Almost surely, 2^31310111112 is an apocalyptic number.

It is an amenable number.

31310111112 is an abundant number, since it is smaller than the sum of its proper divisors (58147349688).

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

31310111112 is a wasteful number, since it uses less digits than its factorization.

31310111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186369725 (or 186369721 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 31310111112 its reverse (21111101313), we get a palindrome (52421212425).

The spelling of 31310111112 in words is "thirty-one billion, three hundred ten million, one hundred eleven thousand, one hundred twelve".