3157213 has 2 divisors, whose sum is σ = 3157214. Its totient is φ = 3157212.

The previous prime is 3157207. The next prime is 3157229. The reversal of 3157213 is 3127513.

3157213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1951609 + 1205604 = 1397^2 + 1098^2 .

It is an emirp because it is prime and its reverse (3127513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3157213 - 2⁵ = 3157181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3157243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1578606 + 1578607.

It is an arithmetic number, because the mean of its divisors is an integer number (1578607).

Almost surely, 2^3157213 is an apocalyptic number.

It is an amenable number.

3157213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3157213 is an equidigital number, since it uses as much as digits as its factorization.

3157213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 22.

The square root of 3157213 is about 1776.8548055483. The cubic root of 3157213 is about 146.7015246578.

The spelling of 3157213 in words is "three million, one hundred fifty-seven thousand, two hundred thirteen".