313903 has 4 divisors (see below), whose sum is σ = 317520. Its totient is φ = 310288.

The previous prime is 313897. The next prime is 313909. The reversal of 313903 is 309313.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (313897) and next prime (313909).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313903 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 (313909) 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, 1675 + ... + 1852.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2³¹³⁹⁰³ is an apocalyptic number.

313903 is a deficient number, since it is larger than the sum of its proper divisors (3617).

313903 is an equidigital number, since it uses as much as digits as its factorization.

313903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 313903 is about 560.2704703980. The cubic root of 313903 is about 67.9618442229.

The spelling of 313903 in words is "three hundred thirteen thousand, nine hundred three".