313243403 has 16 divisors (see below), whose sum is σ = 352235520. Its totient is φ = 276091200.

The previous prime is 313243397. The next prime is 313243423. The reversal of 313243403 is 304342313.

It is not a de Polignac number, because 313243403 - 2⁴ = 313243387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313243423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73238 + ... + 77396.

It is an arithmetic number, because the mean of its divisors is an integer number (22014720).

Almost surely, 2^313243403 is an apocalyptic number.

313243403 is a deficient number, since it is larger than the sum of its proper divisors (38992117).

313243403 is a wasteful number, since it uses less digits than its factorization.

313243403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 313243403 is about 17698.6836516166. The cubic root of 313243403 is about 679.1420863315.

Adding to 313243403 its reverse (304342313), we get a palindrome (617585716).

The spelling of 313243403 in words is "three hundred thirteen million, two hundred forty-three thousand, four hundred three".