313231003 has 4 divisors (see below), whose sum is σ = 313277688. Its totient is φ = 313184320.

The previous prime is 313230959. The next prime is 313231013. The reversal of 313231003 is 300132313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313231003 is a prime.

It is a super-2 number, since 2×313231003² = 196227322480772018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313231013) 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, 11158 + ... + 27403.

It is an arithmetic number, because the mean of its divisors is an integer number (78319422).

Almost surely, 2^313231003 is an apocalyptic number.

313231003 is a deficient number, since it is larger than the sum of its proper divisors (46685).

313231003 is an equidigital number, since it uses as much as digits as its factorization.

313231003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46684.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 313231003 is about 17698.3333396114. Note that the first 5 decimals coincide. The cubic root of 313231003 is about 679.1331247456.

Adding to 313231003 its reverse (300132313), we get a palindrome (613363316).

The spelling of 313231003 in words is "three hundred thirteen million, two hundred thirty-one thousand, three".