331203313 has 16 divisors (see below), whose sum is σ = 391495680. Its totient is φ = 274309776.

The previous prime is 331203293. The next prime is 331203319. The reversal of 331203313 is 313302133.

It is a cyclic number.

It is not a de Polignac number, because 331203313 - 2¹⁷ = 331072241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331203319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19620 + ... + 32362.

It is an arithmetic number, because the mean of its divisors is an integer number (24468480).

Almost surely, 2^331203313 is an apocalyptic number.

It is an amenable number.

331203313 is a deficient number, since it is larger than the sum of its proper divisors (60292367).

331203313 is a wasteful number, since it uses less digits than its factorization.

331203313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12876.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 331203313 is about 18198.9920874756. The cubic root of 331203313 is about 691.8812437517.

Adding to 331203313 its reverse (313302133), we get a palindrome (644505446).

The spelling of 331203313 in words is "three hundred thirty-one million, two hundred three thousand, three hundred thirteen".