231122322 has 40 divisors (see below), whose sum is σ = 521047296. Its totient is φ = 76570488.

The previous prime is 231122303. The next prime is 231122323. The reversal of 231122322 is 223221132.

231122322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 = 231122295 and 231122304.

It is not an unprimeable number, because it can be changed into a prime (231122323) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22783 + ... + 31325.

Almost surely, 2^231122322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231122322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260523648).

231122322 is an abundant number, since it is smaller than the sum of its proper divisors (289924974).

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

231122322 is a wasteful number, since it uses less digits than its factorization.

231122322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724 (or 8715 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 231122322 is about 15202.7077193505. The cubic root of 231122322 is about 613.6875282321.

Adding to 231122322 its reverse (223221132), we get a palindrome (454343454).

The spelling of 231122322 in words is "two hundred thirty-one million, one hundred twenty-two thousand, three hundred twenty-two".