20323332131 has 2 divisors, whose sum is σ = 20323332132. Its totient is φ = 20323332130.

The previous prime is 20323332079. The next prime is 20323332137. The reversal of 20323332131 is 13123332302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20323332131 is a prime.

It is a super-2 number, since 2×20323332131² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323332097 and 20323332106.

It is not a weakly prime, because it can be changed into another prime (20323332137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161666065 + 10161666066.

It is an arithmetic number, because the mean of its divisors is an integer number (10161666066).

Almost surely, 2^20323332131 is an apocalyptic number.

20323332131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323332131 is an equidigital number, since it uses as much as digits as its factorization.

20323332131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20323332131 its reverse (13123332302), we get a palindrome (33446664433).

The spelling of 20323332131 in words is "twenty billion, three hundred twenty-three million, three hundred thirty-two thousand, one hundred thirty-one".