331368313 has 2 divisors, whose sum is σ = 331368314. Its totient is φ = 331368312.

The previous prime is 331368307. The next prime is 331368329. The reversal of 331368313 is 313863133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260757904 + 70610409 = 16148^2 + 8403^2 .

It is a cyclic number.

It is not a de Polignac number, because 331368313 - 2⁵ = 331368281 is a prime.

It is not a weakly prime, because it can be changed into another prime (331368343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165684156 + 165684157.

It is an arithmetic number, because the mean of its divisors is an integer number (165684157).

Almost surely, 2^331368313 is an apocalyptic number.

It is an amenable number.

331368313 is a deficient number, since it is larger than the sum of its proper divisors (1).

331368313 is an equidigital number, since it uses as much as digits as its factorization.

331368313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 331368313 is about 18203.5247411044. The cubic root of 331368313 is about 691.9961192661.

The spelling of 331368313 in words is "three hundred thirty-one million, three hundred sixty-eight thousand, three hundred thirteen".