20131321130232 has 64 divisors (see below), whose sum is σ = 54355011060000. Its totient is φ = 6176504047104.

The previous prime is 20131321130213. The next prime is 20131321130269. The reversal of 20131321130232 is 23203112313102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92331607 + ... + 92549382.

Almost surely, 2^{20131321130232} is an apocalyptic number.

It is an amenable number.

20131321130232 is an abundant number, since it is smaller than the sum of its proper divisors (34223689929768).

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

20131321130232 is a wasteful number, since it uses less digits than its factorization.

20131321130232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184881360 (or 184881356 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20131321130232 its reverse (23203112313102), we get a palindrome (43334433443334).

The spelling of 20131321130232 in words is "twenty trillion, one hundred thirty-one billion, three hundred twenty-one million, one hundred thirty thousand, two hundred thirty-two".