1231133321313 has 32 divisors (see below), whose sum is σ = 2140795262720. Its totient is φ = 684491109120.

The previous prime is 1231133321311. The next prime is 1231133321359. The reversal of 1231133321313 is 3131233311321.

1231133321313 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 13 + 332 + 1 + 313 = 666.

It is not a de Polignac number, because 1231133321313 - 2¹ = 1231133321311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231133321311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88019128 + ... + 88033113.

It is an arithmetic number, because the mean of its divisors is an integer number (66899851960).

Almost surely, 2^{1231133321313} is an apocalyptic number.

It is an amenable number.

1231133321313 is a deficient number, since it is larger than the sum of its proper divisors (909661941407).

1231133321313 is a wasteful number, since it uses less digits than its factorization.

1231133321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176052294 (or 176052288 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

Adding to 1231133321313 its reverse (3131233311321), we get a palindrome (4362366632634).

The spelling of 1231133321313 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-three million, three hundred twenty-one thousand, three hundred thirteen".