3112211213 has 12 divisors (see below), whose sum is σ = 3256451100. Its totient is φ = 2974114176.

The previous prime is 3112211209. The next prime is 3112211269. The reversal of 3112211213 is 3121122113.

It can be written as a sum of positive squares in 2 ways, for example, as 2103323044 + 1008888169 = 45862^2 + 31763^2 .

It is not a de Polignac number, because 3112211213 - 2² = 3112211209 is a prime.

It is a super-3 number, since 3×3112211213³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3112211191 and 3112211200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112211293) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 766613 + ... + 770661.

It is an arithmetic number, because the mean of its divisors is an integer number (271370925).

Almost surely, 2^3112211213 is an apocalyptic number.

It is an amenable number.

3112211213 is a deficient number, since it is larger than the sum of its proper divisors (144239887).

3112211213 is a wasteful number, since it uses less digits than its factorization.

3112211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548 (or 5525 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 3112211213 is about 55787.1957800354. The cubic root of 3112211213 is about 1460.0117614928.

Adding to 3112211213 its reverse (3121122113), we get a palindrome (6233333326).

The spelling of 3112211213 in words is "three billion, one hundred twelve million, two hundred eleven thousand, two hundred thirteen".