3120913 has 4 divisors (see below), whose sum is σ = 3205300. Its totient is φ = 3036528.

The previous prime is 3120907. The next prime is 3120919. The reversal of 3120913 is 3190213.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3120907) and next prime (3120919).

It can be written as a sum of positive squares in 2 ways, for example, as 2289169 + 831744 = 1513^2 + 912^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120913 - 2⁵ = 3120881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3120919) 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 3 ways as a sum of consecutive naturals, for example, 42138 + ... + 42211.

It is an arithmetic number, because the mean of its divisors is an integer number (801325).

Almost surely, 2^3120913 is an apocalyptic number.

It is an amenable number.

3120913 is a deficient number, since it is larger than the sum of its proper divisors (84387).

3120913 is an equidigital number, since it uses as much as digits as its factorization.

3120913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84386.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 3120913 is about 1766.6105965945. The cubic root of 3120913 is about 146.1371233157.

The spelling of 3120913 in words is "three million, one hundred twenty thousand, nine hundred thirteen".