203080993 has 4 divisors (see below), whose sum is σ = 203113348. Its totient is φ = 203048640.

The previous prime is 203080981. The next prime is 203081023. The reversal of 203080993 is 399080302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399080302 = 2 ⋅199540151.

It can be written as a sum of positive squares in 2 ways, for example, as 142754704 + 60326289 = 11948^2 + 7767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203080993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203080393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3396 + ... + 20437.

It is an arithmetic number, because the mean of its divisors is an integer number (50778337).

Almost surely, 2^203080993 is an apocalyptic number.

It is an amenable number.

203080993 is a deficient number, since it is larger than the sum of its proper divisors (32355).

203080993 is an equidigital number, since it uses as much as digits as its factorization.

203080993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32354.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 203080993 is about 14250.6488624203. The cubic root of 203080993 is about 587.7912175059.

The spelling of 203080993 in words is "two hundred three million, eighty thousand, nine hundred ninety-three".