23312133231 has 4 divisors (see below), whose sum is σ = 31082844312. Its totient is φ = 15541422152.

The previous prime is 23312133223. The next prime is 23312133281. The reversal of 23312133231 is 13233121332.

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 23312133231 - 2³ = 23312133223 is a prime.

It is a super-2 number, since 2×23312133231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312133211) 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, 3885355536 + ... + 3885355541.

It is an arithmetic number, because the mean of its divisors is an integer number (7770711078).

Almost surely, 2^23312133231 is an apocalyptic number.

23312133231 is a deficient number, since it is larger than the sum of its proper divisors (7770711081).

23312133231 is an equidigital number, since it uses as much as digits as its factorization.

23312133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7770711080.

The product of its digits is 1944, while the sum is 24.

Adding to 23312133231 its reverse (13233121332), we get a palindrome (36545254563).

The spelling of 23312133231 in words is "twenty-three billion, three hundred twelve million, one hundred thirty-three thousand, two hundred thirty-one".