21130432023 has 16 divisors (see below), whose sum is σ = 29331082080. Its totient is φ = 13514557056.

The previous prime is 21130432021. The next prime is 21130432033. The reversal of 21130432023 is 32023403112.

It is not a de Polignac number, because 21130432023 - 2¹ = 21130432021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130432021) 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, 759840 + ... + 787157.

It is an arithmetic number, because the mean of its divisors is an integer number (1833192630).

Almost surely, 2^21130432023 is an apocalyptic number.

21130432023 is a deficient number, since it is larger than the sum of its proper divisors (8200650057).

21130432023 is a wasteful number, since it uses less digits than its factorization.

21130432023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547186.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21130432023 its reverse (32023403112), we get a palindrome (53153835135).

The spelling of 21130432023 in words is "twenty-one billion, one hundred thirty million, four hundred thirty-two thousand, twenty-three".