345318403 has 2 divisors, whose sum is σ = 345318404. Its totient is φ = 345318402.

The previous prime is 345318329. The next prime is 345318437. The reversal of 345318403 is 304813543.

It is a strong prime.

It is an emirp because it is prime and its reverse (304813543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345318403 - 2²⁵ = 311763971 is a prime.

It is not a weakly prime, because it can be changed into another prime (345318443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172659201 + 172659202.

It is an arithmetic number, because the mean of its divisors is an integer number (172659202).

Almost surely, 2^345318403 is an apocalyptic number.

345318403 is a deficient number, since it is larger than the sum of its proper divisors (1).

345318403 is an equidigital number, since it uses as much as digits as its factorization.

345318403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 345318403 is about 18582.7447649695. The cubic root of 345318403 is about 701.5736047729.

The spelling of 345318403 in words is "three hundred forty-five million, three hundred eighteen thousand, four hundred three".