23131323222 has 32 divisors (see below), whose sum is σ = 52924722432. Its totient is φ = 6602308704.

The previous prime is 23131323209. The next prime is 23131323223. The reversal of 23131323222 is 22232313132.

It is a super-2 number, since 2×23131323222² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23131323192 and 23131323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131323223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234328 + ... + 318075.

It is an arithmetic number, because the mean of its divisors is an integer number (1653897576).

Almost surely, 2^23131323222 is an apocalyptic number.

23131323222 is an abundant number, since it is smaller than the sum of its proper divisors (29793399210).

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

23131323222 is a wasteful number, since it uses less digits than its factorization.

23131323222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553412.

The product of its digits is 2592, while the sum is 24.

Adding to 23131323222 its reverse (22232313132), we get a palindrome (45363636354).

The spelling of 23131323222 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred twenty-two".