20104002131 has 2 divisors, whose sum is σ = 20104002132. Its totient is φ = 20104002130.

The previous prime is 20104002109. The next prime is 20104002167. The reversal of 20104002131 is 13120040102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20104002131 - 2⁶ = 20104002067 is a prime.

It is a super-2 number, since 2×20104002131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20104002181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052001065 + 10052001066.

It is an arithmetic number, because the mean of its divisors is an integer number (10052001066).

Almost surely, 2^20104002131 is an apocalyptic number.

20104002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104002131 is an equidigital number, since it uses as much as digits as its factorization.

20104002131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20104002131 its reverse (13120040102), we get a palindrome (33224042233).

The spelling of 20104002131 in words is "twenty billion, one hundred four million, two thousand, one hundred thirty-one".