20413402931 has 2 divisors, whose sum is σ = 20413402932. Its totient is φ = 20413402930.

The previous prime is 20413402927. The next prime is 20413403051. The reversal of 20413402931 is 13920431402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20413402931 - 2² = 20413402927 is a prime.

It is a super-2 number, since 2×20413402931² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20413402894 and 20413402903.

It is not a weakly prime, because it can be changed into another prime (20413404931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206701465 + 10206701466.

It is an arithmetic number, because the mean of its divisors is an integer number (10206701466).

Almost surely, 2^20413402931 is an apocalyptic number.

20413402931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413402931 is an equidigital number, since it uses as much as digits as its factorization.

20413402931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 20413402931 in words is "twenty billion, four hundred thirteen million, four hundred two thousand, nine hundred thirty-one".