231122312 has 16 divisors (see below), whose sum is σ = 442575360. Its totient is φ = 113102224.

The previous prime is 231122303. The next prime is 231122323. The reversal of 231122312 is 213221132.

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 3 ways as a sum of consecutive naturals, for example, 306968 + ... + 307719.

It is an arithmetic number, because the mean of its divisors is an integer number (27660960).

Almost surely, 2^231122312 is an apocalyptic number.

It is an amenable number.

231122312 is a deficient number, since it is larger than the sum of its proper divisors (211453048).

231122312 is a wasteful number, since it uses less digits than its factorization.

231122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614740 (or 614736 counting only the distinct ones).

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

The square root of 231122312 is about 15202.7073904617. The cubic root of 231122312 is about 613.6875193813.

Adding to 231122312 its reverse (213221132), we get a palindrome (444343444).

The spelling of 231122312 in words is "two hundred thirty-one million, one hundred twenty-two thousand, three hundred twelve".