993231 has 6 divisors (see below), whose sum is σ = 1434680. Its totient is φ = 662148.

The previous prime is 993217. The next prime is 993233. The reversal of 993231 is 132399.

It is not a de Polignac number, because 993231 - 2⁵ = 993199 is a prime.

It is a super-2 number, since 2×993231² = 1973015638722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993195 and 993204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55171 + ... + 55188.

2⁹⁹³²³¹ is an apocalyptic number.

993231 is a deficient number, since it is larger than the sum of its proper divisors (441449).

993231 is a wasteful number, since it uses less digits than its factorization.

993231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110365 (or 110362 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 993231 is about 996.6097531130. The cubic root of 993231 is about 99.7738556395.

The spelling of 993231 in words is "nine hundred ninety-three thousand, two hundred thirty-one".