3120917 has 4 divisors (see below), whose sum is σ = 3136800. Its totient is φ = 3105036.

The previous prime is 3120907. The next prime is 3120919. The reversal of 3120917 is 7190213.

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 3120917 - 2¹⁴ = 3104533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120892 and 3120901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120919) 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, 7643 + ... + 8040.

It is an arithmetic number, because the mean of its divisors is an integer number (784200).

Almost surely, 2^3120917 is an apocalyptic number.

It is an amenable number.

3120917 is a deficient number, since it is larger than the sum of its proper divisors (15883).

3120917 is a wasteful number, since it uses less digits than its factorization.

3120917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15882.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 3120917 is about 1766.6117287055. The cubic root of 3120917 is about 146.1371857492.

The spelling of 3120917 in words is "three million, one hundred twenty thousand, nine hundred seventeen".