20413344131 has 2 divisors, whose sum is σ = 20413344132. Its totient is φ = 20413344130.

The previous prime is 20413344053. The next prime is 20413344143. The reversal of 20413344131 is 13144331402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20413344131 - 2³⁴ = 3233474947 is a prime.

It is a super-2 number, since 2×20413344131² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20413344131.

It is not a weakly prime, because it can be changed into another prime (20413334131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206672065 + 10206672066.

It is an arithmetic number, because the mean of its divisors is an integer number (10206672066).

Almost surely, 2^20413344131 is an apocalyptic number.

20413344131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413344131 is an equidigital number, since it uses as much as digits as its factorization.

20413344131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20413344131 its reverse (13144331402), we get a palindrome (33557675533).

The spelling of 20413344131 in words is "twenty billion, four hundred thirteen million, three hundred forty-four thousand, one hundred thirty-one".