23404321331 has 4 divisors (see below), whose sum is σ = 23409896664. Its totient is φ = 23398746000.

The previous prime is 23404321321. The next prime is 23404321337. The reversal of 23404321331 is 13312340432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23404321331 - 2²⁶ = 23337212467 is a prime.

It is a super-2 number, since 2×23404321331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23404321331.

It is not an unprimeable number, because it can be changed into a prime (23404321337) 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, 2781365 + ... + 2789766.

It is an arithmetic number, because the mean of its divisors is an integer number (5852474166).

Almost surely, 2^23404321331 is an apocalyptic number.

23404321331 is a deficient number, since it is larger than the sum of its proper divisors (5575333).

23404321331 is an equidigital number, since it uses as much as digits as its factorization.

23404321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575332.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 23404321331 its reverse (13312340432), we get a palindrome (36716661763).

The spelling of 23404321331 in words is "twenty-three billion, four hundred four million, three hundred twenty-one thousand, three hundred thirty-one".