331366399 has 8 divisors (see below), whose sum is σ = 407835680. Its totient is φ = 262179936.

The previous prime is 331366393. The next prime is 331366429. The reversal of 331366399 is 993663133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331366399 - 2³ = 331366391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331366391) 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 7 ways as a sum of consecutive naturals, for example, 1820604 + ... + 1820785.

It is an arithmetic number, because the mean of its divisors is an integer number (50979460).

Almost surely, 2^331366399 is an apocalyptic number.

331366399 is a deficient number, since it is larger than the sum of its proper divisors (76469281).

331366399 is a wasteful number, since it uses less digits than its factorization.

331366399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641409.

The product of its digits is 236196, while the sum is 43.

The square root of 331366399 is about 18203.4721687924. The cubic root of 331366399 is about 691.9947869288.

The spelling of 331366399 in words is "three hundred thirty-one million, three hundred sixty-six thousand, three hundred ninety-nine".