345326291 has 4 divisors (see below), whose sum is σ = 354659472. Its totient is φ = 335993112.

The previous prime is 345326257. The next prime is 345326297. The reversal of 345326291 is 192623543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345326291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345326297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4666535 + ... + 4666608.

It is an arithmetic number, because the mean of its divisors is an integer number (88664868).

Almost surely, 2^345326291 is an apocalyptic number.

345326291 is a deficient number, since it is larger than the sum of its proper divisors (9333181).

345326291 is an equidigital number, since it uses as much as digits as its factorization.

345326291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333180.

The product of its digits is 38880, while the sum is 35.

The square root of 345326291 is about 18582.9570036633. The cubic root of 345326291 is about 701.5789466742.

The spelling of 345326291 in words is "three hundred forty-five million, three hundred twenty-six thousand, two hundred ninety-one".