331213199 has 4 divisors (see below), whose sum is σ = 331255680. Its totient is φ = 331170720.

The previous prime is 331213189. The next prime is 331213213. The reversal of 331213199 is 991312133.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 331213199 - 2⁸ = 331212943 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 (331213139) 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 3 ways as a sum of consecutive naturals, for example, 5807 + ... + 26384.

It is an arithmetic number, because the mean of its divisors is an integer number (82813920).

Almost surely, 2^331213199 is an apocalyptic number.

331213199 is a deficient number, since it is larger than the sum of its proper divisors (42481).

331213199 is a wasteful number, since it uses less digits than its factorization.

331213199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42480.

The product of its digits is 4374, while the sum is 32.

The square root of 331213199 is about 18199.2636938971. The cubic root of 331213199 is about 691.8881276099. Note that the first 3 decimals are identical.

The spelling of 331213199 in words is "three hundred thirty-one million, two hundred thirteen thousand, one hundred ninety-nine".