3315091391 has 2 divisors, whose sum is σ = 3315091392. Its totient is φ = 3315091390.

The previous prime is 3315091369. The next prime is 3315091399. The reversal of 3315091391 is 1931905133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3315091391 - 2¹⁸ = 3314829247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3315091399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1657545695 + 1657545696.

It is an arithmetic number, because the mean of its divisors is an integer number (1657545696).

Almost surely, 2^3315091391 is an apocalyptic number.

3315091391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3315091391 is an equidigital number, since it uses as much as digits as its factorization.

3315091391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10935, while the sum is 35.

The square root of 3315091391 is about 57576.8303313060. The cubic root of 3315091391 is about 1491.0716118847.

The spelling of 3315091391 in words is "three billion, three hundred fifteen million, ninety-one thousand, three hundred ninety-one".