349517123 has 4 divisors (see below), whose sum is σ = 349994688. Its totient is φ = 349039560.

The previous prime is 349517117. The next prime is 349517153. The reversal of 349517123 is 321715943.

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 349517123 - 2⁴ = 349517107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349517153) 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, 237683 + ... + 239148.

It is an arithmetic number, because the mean of its divisors is an integer number (87498672).

Almost surely, 2^349517123 is an apocalyptic number.

349517123 is a deficient number, since it is larger than the sum of its proper divisors (477565).

349517123 is an equidigital number, since it uses as much as digits as its factorization.

349517123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477564.

The product of its digits is 22680, while the sum is 35.

The square root of 349517123 is about 18695.3770488856. The cubic root of 349517123 is about 704.4056308596.

The spelling of 349517123 in words is "three hundred forty-nine million, five hundred seventeen thousand, one hundred twenty-three".