1231323131122 has 64 divisors (see below), whose sum is σ = 2179212355584. Its totient is φ = 510851577600.

The previous prime is 1231323131119. The next prime is 1231323131147. The reversal of 1231323131122 is 2211313231321.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40254298 + ... + 40284874.

It is an arithmetic number, because the mean of its divisors is an integer number (34050193056).

Almost surely, 2^{1231323131122} is an apocalyptic number.

1231323131122 is a deficient number, since it is larger than the sum of its proper divisors (947889224462).

1231323131122 is a wasteful number, since it uses less digits than its factorization.

1231323131122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31223.

The product of its digits is 1296, while the sum is 25.

Adding to 1231323131122 its reverse (2211313231321), we get a palindrome (3442636362443).

The spelling of 1231323131122 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-three million, one hundred thirty-one thousand, one hundred twenty-two".