31112111022 has 32 divisors (see below), whose sum is σ = 63531240192. Its totient is φ = 10154721984.

The previous prime is 31112111011. The next prime is 31112111029. The reversal of 31112111022 is 22011121113.

It is a junction number, because it is equal to n+sod(n) for n = 31112110992 and 31112111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112111029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164583 + ... + 298850.

It is an arithmetic number, because the mean of its divisors is an integer number (1985351256).

Almost surely, 2^31112111022 is an apocalyptic number.

31112111022 is an abundant number, since it is smaller than the sum of its proper divisors (32419129170).

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

31112111022 is a wasteful number, since it uses less digits than its factorization.

31112111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463672.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 31112111022 its reverse (22011121113), we get a palindrome (53123232135).

The spelling of 31112111022 in words is "thirty-one billion, one hundred twelve million, one hundred eleven thousand, twenty-two".