331331013 has 64 divisors (see below), whose sum is σ = 546676480. Its totient is φ = 197074944.

The previous prime is 331331009. The next prime is 331331047. The reversal of 331331013 is 310133133.

331331013 is a `hidden beast` number, since 331 + 331 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 331331013 - 2² = 331331009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331331083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1716645 + ... + 1716837.

It is an arithmetic number, because the mean of its divisors is an integer number (8541820).

Almost surely, 2^331331013 is an apocalyptic number.

It is an amenable number.

331331013 is a deficient number, since it is larger than the sum of its proper divisors (215345467).

331331013 is a wasteful number, since it uses less digits than its factorization.

331331013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

The square root of 331331013 is about 18202.5001854141. The cubic root of 331331013 is about 691.9701537742.

Adding to 331331013 its reverse (310133133), we get a palindrome (641464146).

The spelling of 331331013 in words is "three hundred thirty-one million, three hundred thirty-one thousand, thirteen".