31322012021112 has 32 divisors (see below), whose sum is σ = 80830998766080. Its totient is φ = 10103874845280.

The previous prime is 31322012021087. The next prime is 31322012021123. The reversal of 31322012021112 is 21112021022313.

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, 21049738518 + ... + 21049740005.

It is an arithmetic number, because the mean of its divisors is an integer number (2525968711440).

Almost surely, 2^{31322012021112} is an apocalyptic number.

It is an amenable number.

31322012021112 is an abundant number, since it is smaller than the sum of its proper divisors (49508986744968).

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

31322012021112 is a wasteful number, since it uses less digits than its factorization.

31322012021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42099478563 (or 42099478559 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31322012021112 its reverse (21112021022313), we get a palindrome (52434033043425).

The spelling of 31322012021112 in words is "thirty-one trillion, three hundred twenty-two billion, twelve million, twenty-one thousand, one hundred twelve".