20311232213023 has 2 divisors, whose sum is σ = 20311232213024. Its totient is φ = 20311232213022.

The previous prime is 20311232212993. The next prime is 20311232213099. The reversal of 20311232213023 is 32031223211302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20311232213023 - 2⁵ = 20311232212991 is a prime.

It is a super-2 number, since 2×20311232213023² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20311232213423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155616106511 + 10155616106512.

It is an arithmetic number, because the mean of its divisors is an integer number (10155616106512).

Almost surely, 2^{20311232213023} is an apocalyptic number.

20311232213023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311232213023 is an equidigital number, since it uses as much as digits as its factorization.

20311232213023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20311232213023 its reverse (32031223211302), we get a palindrome (52342455424325).

The spelling of 20311232213023 in words is "twenty trillion, three hundred eleven billion, two hundred thirty-two million, two hundred thirteen thousand, twenty-three".