23031031231 has 8 divisors (see below), whose sum is σ = 26261628624. Its totient is φ = 20008859520.

The previous prime is 23031031217. The next prime is 23031031237. The reversal of 23031031231 is 13213013032.

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

It is not a de Polignac number, because 23031031231 - 2⁷ = 23031031103 is a prime.

It is a super-2 number, since 2×23031031231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23031031199 and 23031031208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031031237) 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, 52106185 + ... + 52106626.

It is an arithmetic number, because the mean of its divisors is an integer number (3282703578).

Almost surely, 2^23031031231 is an apocalyptic number.

23031031231 is a deficient number, since it is larger than the sum of its proper divisors (3230597393).

23031031231 is a wasteful number, since it uses less digits than its factorization.

23031031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104212841.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23031031231 its reverse (13213013032), we get a palindrome (36244044263).

The spelling of 23031031231 in words is "twenty-three billion, thirty-one million, thirty-one thousand, two hundred thirty-one".