203243134401 has 6 divisors (see below), whose sum is σ = 293573416370. Its totient is φ = 135495422928.

The previous prime is 203243134399. The next prime is 203243134427. The reversal of 203243134401 is 104431342302.

203243134401 is a `hidden beast` number, since 2 + 0 + 3 + 243 + 13 + 4 + 401 = 666.

203243134401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 183290159376 + 19952975025 = 428124^2 + 141255^2 .

It is not a de Polignac number, because 203243134401 - 2¹ = 203243134399 is a prime.

It is a super-2 number, since 2×203243134401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (203243134481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11291285236 + ... + 11291285253.

Almost surely, 2^203243134401 is an apocalyptic number.

It is an amenable number.

203243134401 is a deficient number, since it is larger than the sum of its proper divisors (90330281969).

203243134401 is a wasteful number, since it uses less digits than its factorization.

203243134401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22582570495 (or 22582570492 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 203243134401 its reverse (104431342302), we get a palindrome (307674476703).

The spelling of 203243134401 in words is "two hundred three billion, two hundred forty-three million, one hundred thirty-four thousand, four hundred one".