122531315312 has 120 divisors (see below), whose sum is σ = 279048456720. Its totient is φ = 51967319040.

The previous prime is 122531315311. The next prime is 122531315323. The reversal of 122531315312 is 213513135221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122531315311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42004478 + ... + 42007394.

It is an arithmetic number, because the mean of its divisors is an integer number (2325403806).

Almost surely, 2^122531315312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122531315312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139524228360).

122531315312 is an abundant number, since it is smaller than the sum of its proper divisors (156517141408).

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

122531315312 is a wasteful number, since it uses less digits than its factorization.

122531315312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479 (or 3466 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The spelling of 122531315312 in words is "one hundred twenty-two billion, five hundred thirty-one million, three hundred fifteen thousand, three hundred twelve".