203345161 has 8 divisors (see below), whose sum is σ = 205277184. Its totient is φ = 201418560.

The previous prime is 203345159. The next prime is 203345179. The reversal of 203345161 is 161543302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203345161 - 2¹ = 203345159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203345101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130161 + ... + 131713.

It is an arithmetic number, because the mean of its divisors is an integer number (25659648).

Almost surely, 2^203345161 is an apocalyptic number.

It is an amenable number.

203345161 is a deficient number, since it is larger than the sum of its proper divisors (1932023).

203345161 is a wasteful number, since it uses less digits than its factorization.

203345161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 203345161 is about 14259.9144808095. The cubic root of 203345161 is about 588.0459735831.

Adding to 203345161 its reverse (161543302), we get a palindrome (364888463).

The spelling of 203345161 in words is "two hundred three million, three hundred forty-five thousand, one hundred sixty-one".