313320143 has 4 divisors (see below), whose sum is σ = 313419600. Its totient is φ = 313220688.

The previous prime is 313320113. The next prime is 313320151. The reversal of 313320143 is 341023313.

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 313320143 - 2²⁶ = 246211279 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 (313320113) 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, 44843 + ... + 51356.

It is an arithmetic number, because the mean of its divisors is an integer number (78354900).

Almost surely, 2^313320143 is an apocalyptic number.

313320143 is a deficient number, since it is larger than the sum of its proper divisors (99457).

313320143 is an equidigital number, since it uses as much as digits as its factorization.

313320143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99456.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 313320143 is about 17700.8514766946. The cubic root of 313320143 is about 679.1975417248.

Adding to 313320143 its reverse (341023313), we get a palindrome (654343456).

The spelling of 313320143 in words is "three hundred thirteen million, three hundred twenty thousand, one hundred forty-three".