231321122 has 8 divisors (see below), whose sum is σ = 354364416. Its totient is φ = 113199652.

The previous prime is 231321121. The next prime is 231321127. The reversal of 231321122 is 221123132.

231321122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×231321122² = 107018922966677768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231321122.

It is not an unprimeable number, because it can be changed into a prime (231321121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230338 + ... + 1230525.

It is an arithmetic number, because the mean of its divisors is an integer number (44295552).

Almost surely, 2^231321122 is an apocalyptic number.

231321122 is a deficient number, since it is larger than the sum of its proper divisors (123043294).

231321122 is a wasteful number, since it uses less digits than its factorization.

231321122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460912.

The product of its digits is 144, while the sum is 17.

The square root of 231321122 is about 15209.2446229259. The cubic root of 231321122 is about 613.8634323688.

Adding to 231321122 its reverse (221123132), we get a palindrome (452444254).

The spelling of 231321122 in words is "two hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-two".