343903 has 8 divisors (see below), whose sum is σ = 399008. Its totient is φ = 290304.

The previous prime is 343901. The next prime is 343913. The reversal of 343903 is 309343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 343903 - 2¹ = 343901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343903.

It is not an unprimeable number, because it can be changed into a prime (343901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175 + ... + 847.

It is an arithmetic number, because the mean of its divisors is an integer number (49876).

2³⁴³⁹⁰³ is an apocalyptic number.

343903 is a deficient number, since it is larger than the sum of its proper divisors (55105).

343903 is an equidigital number, since it uses as much as digits as its factorization.

343903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 343903 is about 586.4324343008. The cubic root of 343903 is about 70.0613747434.

The spelling of 343903 in words is "three hundred forty-three thousand, nine hundred three".