3112113209 has 4 divisors (see below), whose sum is σ = 3116257920. Its totient is φ = 3107968500.

The previous prime is 3112113203. The next prime is 3112113223. The reversal of 3112113209 is 9023112113.

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 a de Polignac number, because none of the positive numbers 2^k-3112113209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3112113203) 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, 2071229 + ... + 2072730.

It is an arithmetic number, because the mean of its divisors is an integer number (779064480).

Almost surely, 2^3112113209 is an apocalyptic number.

It is an amenable number.

3112113209 is a deficient number, since it is larger than the sum of its proper divisors (4144711).

3112113209 is an equidigital number, since it uses as much as digits as its factorization.

3112113209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144710.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 3112113209 is about 55786.3173995201. The cubic root of 3112113209 is about 1459.9964360018.

The spelling of 3112113209 in words is "three billion, one hundred twelve million, one hundred thirteen thousand, two hundred nine".