345043391 has 8 divisors (see below), whose sum is σ = 430184064. Its totient is φ = 268864920.

The previous prime is 345043381. The next prime is 345043393. The reversal of 345043391 is 193340543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345043391 - 2²² = 340849087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345043393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240465 + ... + 2240618.

It is an arithmetic number, because the mean of its divisors is an integer number (53773008).

Almost surely, 2^345043391 is an apocalyptic number.

345043391 is a deficient number, since it is larger than the sum of its proper divisors (85140673).

345043391 is a wasteful number, since it uses less digits than its factorization.

345043391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481101.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 345043391 is about 18575.3436307380. The cubic root of 345043391 is about 701.3873106159.

The spelling of 345043391 in words is "three hundred forty-five million, forty-three thousand, three hundred ninety-one".