3215117 has 2 divisors, whose sum is σ = 3215118. Its totient is φ = 3215116.

The previous prime is 3215111. The next prime is 3215119. The reversal of 3215117 is 7115123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2172676 + 1042441 = 1474^2 + 1021^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215117 - 2¹⁴ = 3198733 is a prime.

Together with 3215119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3215111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607558 + 1607559.

It is an arithmetic number, because the mean of its divisors is an integer number (1607559).

Almost surely, 2^3215117 is an apocalyptic number.

It is an amenable number.

3215117 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215117 is an equidigital number, since it uses as much as digits as its factorization.

3215117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 210, while the sum is 20.

The square root of 3215117 is about 1793.0747335234. The cubic root of 3215117 is about 147.5929434326.

The spelling of 3215117 in words is "three million, two hundred fifteen thousand, one hundred seventeen".