23312321233 has 4 divisors (see below), whose sum is σ = 23322065508. Its totient is φ = 23302576960.

The previous prime is 23312321107. The next prime is 23312321237. The reversal of 23312321233 is 33212321332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8712915649 + 14599405584 = 93343^2 + 120828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23312321233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23312321198 and 23312321207.

It is not an unprimeable number, because it can be changed into a prime (23312321237) 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, 4868548 + ... + 4873333.

It is an arithmetic number, because the mean of its divisors is an integer number (5830516377).

Almost surely, 2^23312321233 is an apocalyptic number.

It is an amenable number.

23312321233 is a deficient number, since it is larger than the sum of its proper divisors (9744275).

23312321233 is an equidigital number, since it uses as much as digits as its factorization.

23312321233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9744274.

The product of its digits is 3888, while the sum is 25.

Adding to 23312321233 its reverse (33212321332), we get a palindrome (56524642565).

Subtracting 23312321233 from its reverse (33212321332), we obtain a palindrome (9900000099).

The spelling of 23312321233 in words is "twenty-three billion, three hundred twelve million, three hundred twenty-one thousand, two hundred thirty-three".