131223013122 has 16 divisors (see below), whose sum is σ = 262459373760. Its totient is φ = 43738779792.

The previous prime is 131223013111. The next prime is 131223013147. The reversal of 131223013122 is 221310322131.

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, 425997 + ... + 666272.

It is an arithmetic number, because the mean of its divisors is an integer number (16403710860).

Almost surely, 2^131223013122 is an apocalyptic number.

131223013122 is an abundant number, since it is smaller than the sum of its proper divisors (131236360638).

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

131223013122 is a wasteful number, since it uses less digits than its factorization.

131223013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112297.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131223013122 its reverse (221310322131), we get a palindrome (352533335253).

The spelling of 131223013122 in words is "one hundred thirty-one billion, two hundred twenty-three million, thirteen thousand, one hundred twenty-two".