3112321213 has 4 divisors (see below), whose sum is σ = 3165072480. Its totient is φ = 3059569948.

The previous prime is 3112321207. The next prime is 3112321217. The reversal of 3112321213 is 3121232113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3112321213 - 2¹⁷ = 3112190141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112321217) 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, 26375545 + ... + 26375662.

It is an arithmetic number, because the mean of its divisors is an integer number (791268120).

Almost surely, 2^3112321213 is an apocalyptic number.

It is an amenable number.

3112321213 is a deficient number, since it is larger than the sum of its proper divisors (52751267).

3112321213 is an equidigital number, since it uses as much as digits as its factorization.

3112321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52751266.

The product of its digits is 216, while the sum is 19.

The square root of 3112321213 is about 55788.1816606349. The cubic root of 3112321213 is about 1460.0289624892.

Adding to 3112321213 its reverse (3121232113), we get a palindrome (6233553326).

It can be divided in two parts, 311232 and 1213, that added together give a triangular number (312445 = T₇₉₀).

The spelling of 3112321213 in words is "three billion, one hundred twelve million, three hundred twenty-one thousand, two hundred thirteen".