203034161 has 4 divisors (see below), whose sum is σ = 221491824. Its totient is φ = 184576500.

The previous prime is 203034157. The next prime is 203034193. The reversal of 203034161 is 161430302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203034161 - 2² = 203034157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203034131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9228815 + ... + 9228836.

It is an arithmetic number, because the mean of its divisors is an integer number (55372956).

Almost surely, 2^203034161 is an apocalyptic number.

It is an amenable number.

203034161 is a deficient number, since it is larger than the sum of its proper divisors (18457663).

203034161 is a wasteful number, since it uses less digits than its factorization.

203034161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18457662.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 203034161 is about 14249.0056144280. The cubic root of 203034161 is about 587.7460310113.

Adding to 203034161 its reverse (161430302), we get a palindrome (364464463).

The spelling of 203034161 in words is "two hundred three million, thirty-four thousand, one hundred sixty-one".