203093678831 has 4 divisors (see below), whose sum is σ = 206423083464. Its totient is φ = 199764274200.

The previous prime is 203093678743. The next prime is 203093678849. The reversal of 203093678831 is 138876390302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203093678831 is a prime.

It is a super-2 number, since 2×203093678831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203093678831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203093678891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664702225 + ... + 1664702346.

It is an arithmetic number, because the mean of its divisors is an integer number (51605770866).

Almost surely, 2^203093678831 is an apocalyptic number.

203093678831 is a deficient number, since it is larger than the sum of its proper divisors (3329404633).

203093678831 is an equidigital number, since it uses as much as digits as its factorization.

203093678831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329404632.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 203093678831 in words is "two hundred three billion, ninety-three million, six hundred seventy-eight thousand, eight hundred thirty-one".