346623391 has 2 divisors, whose sum is σ = 346623392. Its totient is φ = 346623390.

The previous prime is 346623371. The next prime is 346623413. The reversal of 346623391 is 193326643.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 346623391 - 2⁵ = 346623359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 346623391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346623371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173311695 + 173311696.

It is an arithmetic number, because the mean of its divisors is an integer number (173311696).

Almost surely, 2^346623391 is an apocalyptic number.

346623391 is a deficient number, since it is larger than the sum of its proper divisors (1).

346623391 is an equidigital number, since it uses as much as digits as its factorization.

346623391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 37.

The square root of 346623391 is about 18617.8245506826. The cubic root of 346623391 is about 702.4562628596.

The spelling of 346623391 in words is "three hundred forty-six million, six hundred twenty-three thousand, three hundred ninety-one".