993280231 has 4 divisors (see below), whose sum is σ = 1036466352. Its totient is φ = 950094112.

The previous prime is 993280229. The next prime is 993280279. The reversal of 993280231 is 132082399.

993280231 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, and also an emirpimes, since its reverse is a distinct semiprime: 132082399 = 23 ⋅5742713.

It is a cyclic number.

It is not a de Polignac number, because 993280231 - 2¹ = 993280229 is a prime.

It is a super-2 number, since 2×993280231² = 1973211234590826722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993280201) 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, 21593026 + ... + 21593071.

It is an arithmetic number, because the mean of its divisors is an integer number (259116588).

Almost surely, 2^993280231 is an apocalyptic number.

993280231 is a deficient number, since it is larger than the sum of its proper divisors (43186121).

993280231 is a wasteful number, since it uses less digits than its factorization.

993280231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43186120.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 993280231 is about 31516.3486305124. The cubic root of 993280231 is about 997.7550409302.

The spelling of 993280231 in words is "nine hundred ninety-three million, two hundred eighty thousand, two hundred thirty-one".