20302029931 has 2 divisors, whose sum is σ = 20302029932. Its totient is φ = 20302029930.

The previous prime is 20302029889. The next prime is 20302030027. The reversal of 20302029931 is 13992020302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20302029931 is a prime.

It is a super-2 number, since 2×20302029931² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20302029893 and 20302029902.

It is not a weakly prime, because it can be changed into another prime (20302029031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151014965 + 10151014966.

It is an arithmetic number, because the mean of its divisors is an integer number (10151014966).

Almost surely, 2^20302029931 is an apocalyptic number.

20302029931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302029931 is an equidigital number, since it uses as much as digits as its factorization.

20302029931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 20302029931 in words is "twenty billion, three hundred two million, twenty-nine thousand, nine hundred thirty-one".