348045391 has 2 divisors, whose sum is σ = 348045392. Its totient is φ = 348045390.

The previous prime is 348045359. The next prime is 348045413. The reversal of 348045391 is 193540843.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 348045391 - 2⁵ = 348045359 is a prime.

It is a super-2 number, since 2×348045391² = 242271188392685762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 348045391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348055391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174022695 + 174022696.

It is an arithmetic number, because the mean of its divisors is an integer number (174022696).

Almost surely, 2^348045391 is an apocalyptic number.

348045391 is a deficient number, since it is larger than the sum of its proper divisors (1).

348045391 is an equidigital number, since it uses as much as digits as its factorization.

348045391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 348045391 is about 18655.9746730103. The cubic root of 348045391 is about 703.4155460202.

The spelling of 348045391 in words is "three hundred forty-eight million, forty-five thousand, three hundred ninety-one".