331033313 has 6 divisors (see below), whose sum is σ = 358456374. Its totient is φ = 305569056.

The previous prime is 331033291. The next prime is 331033331. The reversal of 331033313 is 313330133.

It can be written as a sum of positive squares in 3 ways, for example, as 37356544 + 293676769 = 6112^2 + 17137^2 .

It is not a de Polignac number, because 331033313 - 2⁶ = 331033249 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 (331033343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 979220 + ... + 979557.

It is an arithmetic number, because the mean of its divisors is an integer number (59742729).

Almost surely, 2^331033313 is an apocalyptic number.

It is an amenable number.

331033313 is a deficient number, since it is larger than the sum of its proper divisors (27423061).

331033313 is a wasteful number, since it uses less digits than its factorization.

331033313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958803 (or 1958790 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 20.

The square root of 331033313 is about 18194.3208996654. The cubic root of 331033313 is about 691.7628472497.

Adding to 331033313 its reverse (313330133), we get a palindrome (644363446).

The spelling of 331033313 in words is "three hundred thirty-one million, thirty-three thousand, three hundred thirteen".