23312232021 has 8 divisors (see below), whose sum is σ = 33473974240. Its totient is φ = 14345988912.

The previous prime is 23312232019. The next prime is 23312232049. The reversal of 23312232021 is 12023221332.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23312232021 - 2¹ = 23312232019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312232091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298874731 + ... + 298874808.

It is an arithmetic number, because the mean of its divisors is an integer number (4184246780).

Almost surely, 2^23312232021 is an apocalyptic number.

It is an amenable number.

23312232021 is a deficient number, since it is larger than the sum of its proper divisors (10161742219).

23312232021 is a wasteful number, since it uses less digits than its factorization.

23312232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597749555.

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

Adding to 23312232021 its reverse (12023221332), we get a palindrome (35335453353).

The spelling of 23312232021 in words is "twenty-three billion, three hundred twelve million, two hundred thirty-two thousand, twenty-one".