20320213011131 has 16 divisors (see below), whose sum is σ = 22886980558848. Its totient is φ = 17880453460800.

The previous prime is 20320213011071. The next prime is 20320213011151. The reversal of 20320213011131 is 13111031202302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20320213011131 - 2¹⁴ = 20320212994747 is a prime.

It is a super-2 number, since 2×20320213011131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320213011151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177328175 + ... + 177442728.

It is an arithmetic number, because the mean of its divisors is an integer number (1430436284928).

Almost surely, 2^{20320213011131} is an apocalyptic number.

20320213011131 is a deficient number, since it is larger than the sum of its proper divisors (2566767547717).

20320213011131 is a wasteful number, since it uses less digits than its factorization.

20320213011131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354771082.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20320213011131 its reverse (13111031202302), we get a palindrome (33431244213433).

The spelling of 20320213011131 in words is "twenty trillion, three hundred twenty billion, two hundred thirteen million, eleven thousand, one hundred thirty-one".