331609699 has 4 divisors (see below), whose sum is σ = 346027536. Its totient is φ = 317191864.

The previous prime is 331609661. The next prime is 331609703. The reversal of 331609699 is 996906133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 331609699 - 2⁷ = 331609571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331609609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7208884 + ... + 7208929.

It is an arithmetic number, because the mean of its divisors is an integer number (86506884).

Almost surely, 2^331609699 is an apocalyptic number.

331609699 is a deficient number, since it is larger than the sum of its proper divisors (14417837).

331609699 is a wasteful number, since it uses less digits than its factorization.

331609699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14417836.

The product of its (nonzero) digits is 236196, while the sum is 46.

The square root of 331609699 is about 18210.1537335630. The cubic root of 331609699 is about 692.1641071971.

The spelling of 331609699 in words is "three hundred thirty-one million, six hundred nine thousand, six hundred ninety-nine".