23320131231 has 8 divisors (see below), whose sum is σ = 31096719360. Its totient is φ = 15545148632.

The previous prime is 23320131221. The next prime is 23320131301. The reversal of 23320131231 is 13213102332.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23320131231 is a prime.

It is a super-2 number, since 2×23320131231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23320131198 and 23320131207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23320131221) 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, 367071 + ... + 425888.

It is an arithmetic number, because the mean of its divisors is an integer number (3887089920).

Almost surely, 2^23320131231 is an apocalyptic number.

23320131231 is a deficient number, since it is larger than the sum of its proper divisors (7776588129).

23320131231 is an equidigital number, since it uses as much as digits as its factorization.

23320131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802765.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23320131231 its reverse (13213102332), we get a palindrome (36533233563).

The spelling of 23320131231 in words is "twenty-three billion, three hundred twenty million, one hundred thirty-one thousand, two hundred thirty-one".