203434121135 has 16 divisors (see below), whose sum is σ = 279630912000. Its totient is φ = 139179910176.

The previous prime is 203434121087. The next prime is 203434121161. The reversal of 203434121135 is 531121434302.

It is a cyclic number.

It is not a de Polignac number, because 203434121135 - 2³² = 199139153839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203434121098 and 203434121107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6604685 + ... + 6635414.

It is an arithmetic number, because the mean of its divisors is an integer number (17476932000).

Almost surely, 2^203434121135 is an apocalyptic number.

203434121135 is a deficient number, since it is larger than the sum of its proper divisors (76196790865).

203434121135 is a wasteful number, since it uses less digits than its factorization.

203434121135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13240550.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 203434121135 its reverse (531121434302), we get a palindrome (734555555437).

The spelling of 203434121135 in words is "two hundred three billion, four hundred thirty-four million, one hundred twenty-one thousand, one hundred thirty-five".