21113032023 has 16 divisors (see below), whose sum is σ = 32357138400. Its totient is φ = 13589997120.

The previous prime is 21113031911. The next prime is 21113032049. The reversal of 21113032023 is 32023031112.

21113032023 is a `hidden beast` number, since 211 + 130 + 320 + 2 + 3 = 666.

It is not a de Polignac number, because 21113032023 - 2⁸ = 21113031767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21113031987 and 21113032005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113032823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13481358 + ... + 13482923.

It is an arithmetic number, because the mean of its divisors is an integer number (2022321150).

Almost surely, 2^21113032023 is an apocalyptic number.

21113032023 is a deficient number, since it is larger than the sum of its proper divisors (11244106377).

21113032023 is a wasteful number, since it uses less digits than its factorization.

21113032023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26964319 (or 26964313 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21113032023 its reverse (32023031112), we get a palindrome (53136063135).

The spelling of 21113032023 in words is "twenty-one billion, one hundred thirteen million, thirty-two thousand, twenty-three".