321111232312 has 16 divisors (see below), whose sum is σ = 648397680840. Its totient is φ = 148205184096.

The previous prime is 321111232307. The next prime is 321111232333. The reversal of 321111232312 is 213232111123.

It is a super-2 number, since 2×321111232312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1543803898 + ... + 1543804105.

Almost surely, 2^321111232312 is an apocalyptic number.

It is an amenable number.

321111232312 is an abundant number, since it is smaller than the sum of its proper divisors (327286448528).

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

321111232312 is a wasteful number, since it uses less digits than its factorization.

321111232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087608022 (or 3087608018 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 321111232312 its reverse (213232111123), we get a palindrome (534343343435).

The spelling of 321111232312 in words is "three hundred twenty-one billion, one hundred eleven million, two hundred thirty-two thousand, three hundred twelve".