349903123 has 4 divisors (see below), whose sum is σ = 354831408. Its totient is φ = 344974840.

The previous prime is 349903063. The next prime is 349903139. The reversal of 349903123 is 321309943.

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 349903123 - 2¹⁷ = 349772051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349903223) 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, 2464036 + ... + 2464177.

It is an arithmetic number, because the mean of its divisors is an integer number (88707852).

Almost surely, 2^349903123 is an apocalyptic number.

349903123 is a deficient number, since it is larger than the sum of its proper divisors (4928285).

349903123 is an equidigital number, since it uses as much as digits as its factorization.

349903123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928284.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 349903123 is about 18705.6976079482. The cubic root of 349903123 is about 704.6648461437.

The spelling of 349903123 in words is "three hundred forty-nine million, nine hundred three thousand, one hundred twenty-three".