20113023 has 32 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 10603008.

The previous prime is 20113019. The next prime is 20113031. The reversal of 20113023 is 32031102.

It is a happy number.

It is not a de Polignac number, because 20113023 - 2² = 20113019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18390 + ... + 19452.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 2^20113023 is an apocalyptic number.

20113023 is a deficient number, since it is larger than the sum of its proper divisors (12981633).

20113023 is a wasteful number, since it uses less digits than its factorization.

20113023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20113023 is about 4484.7545083315. The cubic root of 20113023 is about 271.9521208617.

Adding to 20113023 its reverse (32031102), we get a palindrome (52144125).

The spelling of 20113023 in words is "twenty million, one hundred thirteen thousand, twenty-three".