23013232021 has 16 divisors (see below), whose sum is σ = 25031326320. Its totient is φ = 21030865920.

The previous prime is 23013232009. The next prime is 23013232051. The reversal of 23013232021 is 12023231032.

It can be written as a sum of positive squares in 8 ways, for example, as 163584100 + 22849647921 = 12790^2 + 151161^2 .

It is a cyclic number.

It is not a de Polignac number, because 23013232021 - 2⁷ = 23013231893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23013232021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013232001) 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, 1922571 + ... + 1934503.

It is an arithmetic number, because the mean of its divisors is an integer number (1564457895).

Almost surely, 2^23013232021 is an apocalyptic number.

It is an amenable number.

23013232021 is a deficient number, since it is larger than the sum of its proper divisors (2018094299).

23013232021 is a wasteful number, since it uses less digits than its factorization.

23013232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13416.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23013232021 its reverse (12023231032), we get a palindrome (35036463053).

The spelling of 23013232021 in words is "twenty-three billion, thirteen million, two hundred thirty-two thousand, twenty-one".