203341161 has 4 divisors (see below), whose sum is σ = 271121552. Its totient is φ = 135560772.

The previous prime is 203341157. The next prime is 203341189. The reversal of 203341161 is 161143302.

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 not a de Polignac number, because 203341161 - 2² = 203341157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203341111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33890191 + ... + 33890196.

It is an arithmetic number, because the mean of its divisors is an integer number (67780388).

Almost surely, 2^203341161 is an apocalyptic number.

It is an amenable number.

203341161 is a deficient number, since it is larger than the sum of its proper divisors (67780391).

203341161 is an equidigital number, since it uses as much as digits as its factorization.

203341161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67780390.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 203341161 is about 14259.7742268242. The cubic root of 203341161 is about 588.0421177430.

Adding to 203341161 its reverse (161143302), we get a palindrome (364484463).

The spelling of 203341161 in words is "two hundred three million, three hundred forty-one thousand, one hundred sixty-one".