331303013 has 4 divisors (see below), whose sum is σ = 332368608. Its totient is φ = 330237420.

The previous prime is 331303009. The next prime is 331303031. The reversal of 331303013 is 310303133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331303013 - 2² = 331303009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331302982 and 331303000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331303073) 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, 532331 + ... + 532952.

It is an arithmetic number, because the mean of its divisors is an integer number (83092152).

Almost surely, 2^331303013 is an apocalyptic number.

It is an amenable number.

331303013 is a deficient number, since it is larger than the sum of its proper divisors (1065595).

331303013 is a wasteful number, since it uses less digits than its factorization.

331303013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065594.

The product of its (nonzero) digits is 243, while the sum is 17.

The square root of 331303013 is about 18201.7310440518. The cubic root of 331303013 is about 691.9506609715.

Adding to 331303013 its reverse (310303133), we get a palindrome (641606146).

The spelling of 331303013 in words is "three hundred thirty-one million, three hundred three thousand, thirteen".