23131110222 has 112 divisors (see below), whose sum is σ = 56887764480. Its totient is φ = 6992470800.

The previous prime is 23131110161. The next prime is 23131110227. The reversal of 23131110222 is 22201113132.

23131110222 is a `hidden beast` number, since 231 + 311 + 102 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23131110195 and 23131110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131110227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 7680697 + ... + 7683707.

Almost surely, 2^23131110222 is an apocalyptic number.

23131110222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131110222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28443882240).

23131110222 is an abundant number, since it is smaller than the sum of its proper divisors (33756654258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23131110222 is a wasteful number, since it uses less digits than its factorization.

23131110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521 (or 3506 counting only the distinct ones).

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

Adding to 23131110222 its reverse (22201113132), we get a palindrome (45332223354).

The spelling of 23131110222 in words is "twenty-three billion, one hundred thirty-one million, one hundred ten thousand, two hundred twenty-two".