23031222231 has 8 divisors (see below), whose sum is σ = 30903891184. Its totient is φ = 15256350720.

The previous prime is 23031222187. The next prime is 23031222259. The reversal of 23031222231 is 13222213032.

It is a happy number.

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

It is not a de Polignac number, because 23031222231 - 2⁶ = 23031222167 is a prime.

It is a super-2 number, since 2×23031222231² (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 = 23031222198 and 23031222207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031222031) 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, 24448810 + ... + 24449751.

It is an arithmetic number, because the mean of its divisors is an integer number (3862986398).

Almost surely, 2^23031222231 is an apocalyptic number.

23031222231 is a deficient number, since it is larger than the sum of its proper divisors (7872668953).

23031222231 is a wasteful number, since it uses less digits than its factorization.

23031222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48898721.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23031222231 its reverse (13222213032), we get a palindrome (36253435263).

The spelling of 23031222231 in words is "twenty-three billion, thirty-one million, two hundred twenty-two thousand, two hundred thirty-one".