20131321130203 has 32 divisors (see below), whose sum is σ = 20933498234880. Its totient is φ = 19339381152000.

The previous prime is 20131321130177. The next prime is 20131321130209. The reversal of 20131321130203 is 30203112313102.

It is a cyclic number.

It is not a de Polignac number, because 20131321130203 - 2²¹ = 20131319033051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131321130209) 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, 2434549153 + ... + 2434557421.

It is an arithmetic number, because the mean of its divisors is an integer number (654171819840).

Almost surely, 2^{20131321130203} is an apocalyptic number.

20131321130203 is a deficient number, since it is larger than the sum of its proper divisors (802177104677).

20131321130203 is a wasteful number, since it uses less digits than its factorization.

20131321130203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20131321130203 its reverse (30203112313102), we get a palindrome (50334433443305).

The spelling of 20131321130203 in words is "twenty trillion, one hundred thirty-one billion, three hundred twenty-one million, one hundred thirty thousand, two hundred three".