993331 has 4 divisors (see below), whose sum is σ = 996664. Its totient is φ = 990000.

The previous prime is 993323. The next prime is 993341. The reversal of 993331 is 133399.

It is a happy number.

993331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 993331 - 2³ = 993323 is a prime.

It is a super-2 number, since 2×993331² = 1973412951122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 993331.

It is not an unprimeable number, because it can be changed into a prime (993341) 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, 1170 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (249166).

2⁹⁹³³³¹ is an apocalyptic number.

993331 is a deficient number, since it is larger than the sum of its proper divisors (3333).

993331 is a wasteful number, since it uses less digits than its factorization.

993331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332.

The product of its digits is 2187, while the sum is 28.

The square root of 993331 is about 996.6599219393. The cubic root of 993331 is about 99.7772039880. Note that the first 3 decimals are identical.

The spelling of 993331 in words is "nine hundred ninety-three thousand, three hundred thirty-one".