203031422291 has 16 divisors (see below), whose sum is σ = 205755950400. Its totient is φ = 200324285568.

The previous prime is 203031422267. The next prime is 203031422299. The reversal of 203031422291 is 192224130302.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203031422291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203031422299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29554205 + ... + 29561073.

It is an arithmetic number, because the mean of its divisors is an integer number (12859746900).

Almost surely, 2^203031422291 is an apocalyptic number.

203031422291 is a deficient number, since it is larger than the sum of its proper divisors (2724528109).

203031422291 is a wasteful number, since it uses less digits than its factorization.

203031422291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8078.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 203031422291 its reverse (192224130302), we get a palindrome (395255552593).

The spelling of 203031422291 in words is "two hundred three billion, thirty-one million, four hundred twenty-two thousand, two hundred ninety-one".