20310023 has 2 divisors, whose sum is σ = 20310024. Its totient is φ = 20310022.

The previous prime is 20310007. The next prime is 20310029. The reversal of 20310023 is 32001302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20310023 - 2⁴ = 20310007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20309986 and 20310013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155011 + 10155012.

It is an arithmetic number, because the mean of its divisors is an integer number (10155012).

Almost surely, 2^20310023 is an apocalyptic number.

20310023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310023 is an equidigital number, since it uses as much as digits as its factorization.

20310023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20310023 is about 4506.6642874747. The cubic root of 20310023 is about 272.8371295240.

Adding to 20310023 its reverse (32001302), we get a palindrome (52311325).

The spelling of 20310023 in words is "twenty million, three hundred ten thousand, twenty-three".