345518311 has 4 divisors (see below), whose sum is σ = 345800224. Its totient is φ = 345236400.

The previous prime is 345518297. The next prime is 345518323. The reversal of 345518311 is 113815543.

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 345518311 - 2¹¹ = 345516263 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 (345518011) 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, 139110 + ... + 141571.

It is an arithmetic number, because the mean of its divisors is an integer number (86450056).

Almost surely, 2^345518311 is an apocalyptic number.

345518311 is a deficient number, since it is larger than the sum of its proper divisors (281913).

345518311 is a wasteful number, since it uses less digits than its factorization.

345518311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281912.

The product of its digits is 7200, while the sum is 31.

The square root of 345518311 is about 18588.1228476681. The cubic root of 345518311 is about 701.7089611278.

The spelling of 345518311 in words is "three hundred forty-five million, five hundred eighteen thousand, three hundred eleven".