203031312093 has 12 divisors (see below), whose sum is σ = 293609664348. Its totient is φ = 135196263360.

The previous prime is 203031312047. The next prime is 203031312131. The reversal of 203031312093 is 390213130302.

203031312093 is a `hidden beast` number, since 20 + 303 + 131 + 209 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 175215076569 + 27816235524 = 418587^2 + 166782^2 .

It is not a de Polignac number, because 203031312093 - 2¹⁷ = 203031181021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203031312593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13153918 + ... + 13169343.

It is an arithmetic number, because the mean of its divisors is an integer number (24467472029).

Almost surely, 2^203031312093 is an apocalyptic number.

It is an amenable number.

203031312093 is a deficient number, since it is larger than the sum of its proper divisors (90578352255).

203031312093 is a wasteful number, since it uses less digits than its factorization.

203031312093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26324124 (or 26324121 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 203031312093 its reverse (390213130302), we get a palindrome (593244442395).

The spelling of 203031312093 in words is "two hundred three billion, thirty-one million, three hundred twelve thousand, ninety-three".