3112687121 has 4 divisors (see below), whose sum is σ = 3115893744. Its totient is φ = 3109480500.

The previous prime is 3112687117. The next prime is 3112687169. The reversal of 3112687121 is 1217862113.

3112687121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3112687121 - 2² = 3112687117 is a prime.

It is a super-2 number, since 2×3112687121² = 19377642226478537282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3112687021) 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, 1601855 + ... + 1603796.

It is an arithmetic number, because the mean of its divisors is an integer number (778973436).

Almost surely, 2^3112687121 is an apocalyptic number.

It is an amenable number.

3112687121 is a deficient number, since it is larger than the sum of its proper divisors (3206623).

3112687121 is an equidigital number, since it uses as much as digits as its factorization.

3112687121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206622.

The product of its digits is 4032, while the sum is 32.

The square root of 3112687121 is about 55791.4610043508. The cubic root of 3112687121 is about 1460.0861775929.

The spelling of 3112687121 in words is "three billion, one hundred twelve million, six hundred eighty-seven thousand, one hundred twenty-one".