23042343021 has 8 divisors (see below), whose sum is σ = 30724738080. Its totient is φ = 15360754992.

The previous prime is 23042343011. The next prime is 23042343083. The reversal of 23042343021 is 12034324032.

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

It is not a de Polignac number, because 23042343021 - 2⁹ = 23042342509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23042342982 and 23042343000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23042343001) 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, 131655 + ... + 251828.

It is an arithmetic number, because the mean of its divisors is an integer number (3840592260).

Almost surely, 2^23042343021 is an apocalyptic number.

It is an amenable number.

23042343021 is a deficient number, since it is larger than the sum of its proper divisors (7682395059).

23042343021 is a wasteful number, since it uses less digits than its factorization.

23042343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403515.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 23042343021 its reverse (12034324032), we get a palindrome (35076667053).

The spelling of 23042343021 in words is "twenty-three billion, forty-two million, three hundred forty-three thousand, twenty-one".