313403 has 8 divisors (see below), whose sum is σ = 330480. Its totient is φ = 296800.

The previous prime is 313399. The next prime is 313409. The reversal of 313403 is 304313.

Added to its reverse (304313) it gives a triangular number (617716 = T₁₁₁₁).

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 313403 - 2² = 313399 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 313403.

It is not an unprimeable number, because it can be changed into a prime (313409) 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, 2876 + ... + 2982.

It is an arithmetic number, because the mean of its divisors is an integer number (41310).

2³¹³⁴⁰³ is an apocalyptic number.

313403 is a deficient number, since it is larger than the sum of its proper divisors (17077).

313403 is a wasteful number, since it uses less digits than its factorization.

313403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 313403 is about 559.8240795107. The cubic root of 313403 is about 67.9257407341.

Adding to 313403 its reverse (304313), we get a palindrome (617716).

The spelling of 313403 in words is "three hundred thirteen thousand, four hundred three".