20311013023 has 8 divisors (see below), whose sum is σ = 23219097120. Its totient is φ = 17404556640.

The previous prime is 20311012999. The next prime is 20311013027. The reversal of 20311013023 is 32031011302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20311013023 - 2²⁹ = 19774142111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311012988 and 20311013006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311013027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380068 + ... + 430201.

It is an arithmetic number, because the mean of its divisors is an integer number (2902387140).

Almost surely, 2^20311013023 is an apocalyptic number.

20311013023 is a deficient number, since it is larger than the sum of its proper divisors (2908084097).

20311013023 is an equidigital number, since it uses as much as digits as its factorization.

20311013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813857.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20311013023 its reverse (32031011302), we get a palindrome (52342024325).

The spelling of 20311013023 in words is "twenty billion, three hundred eleven million, thirteen thousand, twenty-three".