23124310021 has 4 divisors (see below), whose sum is σ = 23135810944. Its totient is φ = 23112809100.

The previous prime is 23124310019. The next prime is 23124310049. The reversal of 23124310021 is 12001342132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23124310021 - 2¹ = 23124310019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23124310051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5747445 + ... + 5751466.

It is an arithmetic number, because the mean of its divisors is an integer number (5783952736).

Almost surely, 2^23124310021 is an apocalyptic number.

It is an amenable number.

23124310021 is a deficient number, since it is larger than the sum of its proper divisors (11500923).

23124310021 is a wasteful number, since it uses less digits than its factorization.

23124310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500922.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23124310021 its reverse (12001342132), we get a palindrome (35125652153).

The spelling of 23124310021 in words is "twenty-three billion, one hundred twenty-four million, three hundred ten thousand, twenty-one".