231322122 has 16 divisors (see below), whose sum is σ = 514049280. Its totient is φ = 77107356.

The previous prime is 231322103. The next prime is 231322139. The reversal of 231322122 is 221223132.

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 = 231322095 and 231322104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2141818 + ... + 2141925.

It is an arithmetic number, because the mean of its divisors is an integer number (32128080).

Almost surely, 2^231322122 is an apocalyptic number.

231322122 is an abundant number, since it is smaller than the sum of its proper divisors (282727158).

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

231322122 is a wasteful number, since it uses less digits than its factorization.

231322122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283754 (or 4283748 counting only the distinct ones).

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

The square root of 231322122 is about 15209.2774976328. The cubic root of 231322122 is about 613.8643169437.

Adding to 231322122 its reverse (221223132), we get a palindrome (452545254).

The spelling of 231322122 in words is "two hundred thirty-one million, three hundred twenty-two thousand, one hundred twenty-two".