3213231312 has 40 divisors (see below), whose sum is σ = 8386435456. Its totient is φ = 1060033536.

The previous prime is 3213231289. The next prime is 3213231337. The reversal of 3213231312 is 2131323123.

It is a super-4 number, since 4×3213231312⁴ (a number of 39 digits) contains 4444 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340408 + ... + 349719.

Almost surely, 2^3213231312 is an apocalyptic number.

It is an amenable number.

3213231312 is an abundant number, since it is smaller than the sum of its proper divisors (5173204144).

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

3213231312 is a wasteful number, since it uses less digits than its factorization.

3213231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690235 (or 690229 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 3213231312 is about 56685.3712345610. The cubic root of 3213231312 is about 1475.6408303439.

Adding to 3213231312 its reverse (2131323123), we get a palindrome (5344554435).

The spelling of 3213231312 in words is "three billion, two hundred thirteen million, two hundred thirty-one thousand, three hundred twelve".