203400421330247 has 2 divisors, whose sum is σ = 203400421330248. Its totient is φ = 203400421330246.

The previous prime is 203400421330229. The next prime is 203400421330259. The reversal of 203400421330247 is 742033124004302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203400421330247 - 2³⁸ = 203125543423303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203400421330207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101700210665123 + 101700210665124.

It is an arithmetic number, because the mean of its divisors is an integer number (101700210665124).

Almost surely, 2^{203400421330247} is an apocalyptic number.

203400421330247 is a deficient number, since it is larger than the sum of its proper divisors (1).

203400421330247 is an equidigital number, since it uses as much as digits as its factorization.

203400421330247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 35.

Adding to 203400421330247 its reverse (742033124004302), we get a palindrome (945433545334549).

The spelling of 203400421330247 in words is "two hundred three trillion, four hundred billion, four hundred twenty-one million, three hundred thirty thousand, two hundred forty-seven".