321112312 has 16 divisors (see below), whose sum is σ = 633774600. Its totient is φ = 152105760.

The previous prime is 321112241. The next prime is 321112387. The reversal of 321112312 is 213211123.

It is a super-2 number, since 2×321112312² = 206226233835970688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056139 + ... + 1056442.

Almost surely, 2^321112312 is an apocalyptic number.

It is an amenable number.

321112312 is a deficient number, since it is larger than the sum of its proper divisors (312662288).

321112312 is a wasteful number, since it uses less digits than its factorization.

321112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112606 (or 2112602 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 321112312 is about 17919.6069153316. The cubic root of 321112312 is about 684.7819733423.

Adding to 321112312 its reverse (213211123), we get a palindrome (534323435).

The spelling of 321112312 in words is "three hundred twenty-one million, one hundred twelve thousand, three hundred twelve".