31013231203122 has 24 divisors (see below), whose sum is σ = 72153231779376. Its totient is φ = 8860923200808.

The previous prime is 31013231203117. The next prime is 31013231203159. The reversal of 31013231203122 is 22130213231013.

It is a junction number, because it is equal to n+sod(n) for n = 31013231203092 and 31013231203101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52743590188 + ... + 52743590775.

It is an arithmetic number, because the mean of its divisors is an integer number (3006384657474).

Almost surely, 2^{31013231203122} is an apocalyptic number.

31013231203122 is an abundant number, since it is smaller than the sum of its proper divisors (41140000576254).

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

31013231203122 is a wasteful number, since it uses less digits than its factorization.

31013231203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105487180982 (or 105487180975 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31013231203122 its reverse (22130213231013), we get a palindrome (53143444434135).

The spelling of 31013231203122 in words is "thirty-one trillion, thirteen billion, two hundred thirty-one million, two hundred three thousand, one hundred twenty-two".