993343231 has 2 divisors, whose sum is σ = 993343232. Its totient is φ = 993343230.

The previous prime is 993343229. The next prime is 993343243. The reversal of 993343231 is 132343399.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 993343231 - 2¹ = 993343229 is a prime.

It is a super-2 number, since 2×993343231² = 1973461549147038722, which contains 22 as substring.

Together with 993343229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993346231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496671615 + 496671616.

It is an arithmetic number, because the mean of its divisors is an integer number (496671616).

Almost surely, 2^993343231 is an apocalyptic number.

993343231 is a deficient number, since it is larger than the sum of its proper divisors (1).

993343231 is an equidigital number, since it uses as much as digits as its factorization.

993343231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 37.

The square root of 993343231 is about 31517.3480959296. The cubic root of 993343231 is about 997.7761350910.

The spelling of 993343231 in words is "nine hundred ninety-three million, three hundred forty-three thousand, two hundred thirty-one".