23211120231 has 12 divisors (see below), whose sum is σ = 36106187208. Its totient is φ = 14283766224.

The previous prime is 23211120227. The next prime is 23211120239. The reversal of 23211120231 is 13202111232.

23211120231 is a `hidden beast` number, since 2 + 321 + 112 + 0 + 231 = 666.

It is not a de Polignac number, because 23211120231 - 2² = 23211120227 is a prime.

It is a super-2 number, since 2×23211120231² (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 (23211120239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99192705 + ... + 99192938.

It is an arithmetic number, because the mean of its divisors is an integer number (3008848934).

Almost surely, 2^23211120231 is an apocalyptic number.

23211120231 is a deficient number, since it is larger than the sum of its proper divisors (12895066977).

23211120231 is a wasteful number, since it uses less digits than its factorization.

23211120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198385662 (or 198385659 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23211120231 its reverse (13202111232), we get a palindrome (36413231463).

The spelling of 23211120231 in words is "twenty-three billion, two hundred eleven million, one hundred twenty thousand, two hundred thirty-one".