3112311213 has 24 divisors (see below), whose sum is σ = 4915050816. Its totient is φ = 1882094400.

The previous prime is 3112311179. The next prime is 3112311239. The reversal of 3112311213 is 3121132113.

3112311213 is a `hidden beast` number, since 311 + 231 + 121 + 3 = 666.

It is not a de Polignac number, because 3112311213 - 2⁹ = 3112310701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112311253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10848 + ... + 79638.

It is an arithmetic number, because the mean of its divisors is an integer number (204793784).

Almost surely, 2^3112311213 is an apocalyptic number.

3112311213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3112311213 is a deficient number, since it is larger than the sum of its proper divisors (1802739603).

3112311213 is a wasteful number, since it uses less digits than its factorization.

3112311213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69265 (or 69262 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 3112311213 is about 55788.0920358458. The cubic root of 3112311213 is about 1460.0273987790.

Adding to 3112311213 its reverse (3121132113), we get a palindrome (6233443326).

Subtracting 3112311213 from its reverse (3121132113), we obtain a square (8820900 = 2970²).

The spelling of 3112311213 in words is "three billion, one hundred twelve million, three hundred eleven thousand, two hundred thirteen".