31231123120122 has 32 divisors (see below), whose sum is σ = 63073680808320. Its totient is φ = 10308484654080.

The previous prime is 31231123120111. The next prime is 31231123120159. The reversal of 31231123120122 is 22102132113213.

It is a junction number, because it is equal to n+sod(n) for n = 31231123120092 and 31231123120101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5813254 + ... + 9811022.

It is an arithmetic number, because the mean of its divisors is an integer number (1971052525260).

Almost surely, 2^{31231123120122} is an apocalyptic number.

31231123120122 is an abundant number, since it is smaller than the sum of its proper divisors (31842557688198).

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

31231123120122 is a wasteful number, since it uses less digits than its factorization.

31231123120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010518.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 31231123120122 its reverse (22102132113213), we get a palindrome (53333255233335).

The spelling of 31231123120122 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred twenty-three million, one hundred twenty thousand, one hundred twenty-two".