20020302131 has 2 divisors, whose sum is σ = 20020302132. Its totient is φ = 20020302130.

The previous prime is 20020302119. The next prime is 20020302193. The reversal of 20020302131 is 13120302002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020302131 - 2²² = 20016107827 is a prime.

It is a super-2 number, since 2×20020302131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20020302431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010151065 + 10010151066.

It is an arithmetic number, because the mean of its divisors is an integer number (10010151066).

Almost surely, 2^20020302131 is an apocalyptic number.

20020302131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020302131 is an equidigital number, since it uses as much as digits as its factorization.

20020302131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20020302131 its reverse (13120302002), we get a palindrome (33140604133).

The spelling of 20020302131 in words is "twenty billion, twenty million, three hundred two thousand, one hundred thirty-one".