20020500131 has 2 divisors, whose sum is σ = 20020500132. Its totient is φ = 20020500130.

The previous prime is 20020500079. The next prime is 20020500139. The reversal of 20020500131 is 13100502002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020500131 is a prime.

It is a super-2 number, since 2×20020500131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20020500139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010250065 + 10010250066.

It is an arithmetic number, because the mean of its divisors is an integer number (10010250066).

Almost surely, 2^20020500131 is an apocalyptic number.

20020500131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020500131 is an equidigital number, since it uses as much as digits as its factorization.

20020500131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The spelling of 20020500131 in words is "twenty billion, twenty million, five hundred thousand, one hundred thirty-one".