345311503 has 4 divisors (see below), whose sum is σ = 345593248. Its totient is φ = 345029760.

The previous prime is 345311459. The next prime is 345311507. The reversal of 345311503 is 305113543.

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

It is a cyclic number.

It is not a de Polignac number, because 345311503 - 2¹³ = 345303311 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 (345311507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139026 + ... + 141487.

It is an arithmetic number, because the mean of its divisors is an integer number (86398312).

Almost surely, 2^345311503 is an apocalyptic number.

345311503 is a deficient number, since it is larger than the sum of its proper divisors (281745).

345311503 is a wasteful number, since it uses less digits than its factorization.

345311503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281744.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 345311503 is about 18582.5591079377. The cubic root of 345311503 is about 701.5689318971.

The spelling of 345311503 in words is "three hundred forty-five million, three hundred eleven thousand, five hundred three".