331318349 has 4 divisors (see below), whose sum is σ = 334535136. Its totient is φ = 328101564.

The previous prime is 331318327. The next prime is 331318357. The reversal of 331318349 is 943813133.

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 331318349 - 2²⁴ = 314541133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331318399) 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, 1608239 + ... + 1608444.

It is an arithmetic number, because the mean of its divisors is an integer number (83633784).

Almost surely, 2^331318349 is an apocalyptic number.

It is an amenable number.

331318349 is a deficient number, since it is larger than the sum of its proper divisors (3216787).

331318349 is a wasteful number, since it uses less digits than its factorization.

331318349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216786.

The product of its digits is 23328, while the sum is 35.

The square root of 331318349 is about 18202.1523177892. The cubic root of 331318349 is about 691.9613375940.

The spelling of 331318349 in words is "three hundred thirty-one million, three hundred eighteen thousand, three hundred forty-nine".