20013132131 has 16 divisors (see below), whose sum is σ = 20734278048. Its totient is φ = 19301817600.

The previous prime is 20013132109. The next prime is 20013132137. The reversal of 20013132131 is 13123131002.

It is a cyclic number.

It is not a de Polignac number, because 20013132131 - 2⁶ = 20013132067 is a prime.

It is a super-2 number, since 2×20013132131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013132137) 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, 5780741 + ... + 5784201.

It is an arithmetic number, because the mean of its divisors is an integer number (1295892378).

Almost surely, 2^20013132131 is an apocalyptic number.

20013132131 is a deficient number, since it is larger than the sum of its proper divisors (721145917).

20013132131 is a wasteful number, since it uses less digits than its factorization.

20013132131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20013132131 its reverse (13123131002), we get a palindrome (33136263133).

The spelling of 20013132131 in words is "twenty billion, thirteen million, one hundred thirty-two thousand, one hundred thirty-one".