345305503 has 2 divisors, whose sum is σ = 345305504. Its totient is φ = 345305502.

The previous prime is 345305501. The next prime is 345305537. The reversal of 345305503 is 305503543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345305503 - 2¹ = 345305501 is a prime.

Together with 345305501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345305501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172652751 + 172652752.

It is an arithmetic number, because the mean of its divisors is an integer number (172652752).

Almost surely, 2^345305503 is an apocalyptic number.

345305503 is a deficient number, since it is larger than the sum of its proper divisors (1).

345305503 is an equidigital number, since it uses as much as digits as its factorization.

345305503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 28.

The square root of 345305503 is about 18582.3976655328. The cubic root of 345305503 is about 701.5648684761.

The spelling of 345305503 in words is "three hundred forty-five million, three hundred five thousand, five hundred three".