345516123 has 4 divisors (see below), whose sum is σ = 460688168. Its totient is φ = 230344080.

The previous prime is 345516113. The next prime is 345516131. The reversal of 345516123 is 321615543.

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

It is not a de Polignac number, because 345516123 - 2¹⁰ = 345515099 is a prime.

It is a super-2 number, since 2×345516123² = 238762782505902258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345516103) 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, 57586018 + ... + 57586023.

It is an arithmetic number, because the mean of its divisors is an integer number (115172042).

Almost surely, 2^345516123 is an apocalyptic number.

345516123 is a deficient number, since it is larger than the sum of its proper divisors (115172045).

345516123 is a wasteful number, since it uses less digits than its factorization.

345516123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115172044.

The product of its digits is 10800, while the sum is 30.

The square root of 345516123 is about 18588.0639927885. The cubic root of 345516123 is about 701.7074799304.

The spelling of 345516123 in words is "three hundred forty-five million, five hundred sixteen thousand, one hundred twenty-three".