203235161 has 8 divisors (see below), whose sum is σ = 210849480. Its totient is φ = 195661312.

The previous prime is 203235089. The next prime is 203235167. The reversal of 203235161 is 161532302.

It can be written as a sum of positive squares in 4 ways, for example, as 5973136 + 197262025 = 2444^2 + 14045^2 .

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 203235161 - 2²² = 199040857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203235167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311 + ... + 20163.

It is an arithmetic number, because the mean of its divisors is an integer number (26356185).

Almost surely, 2^203235161 is an apocalyptic number.

It is an amenable number.

203235161 is a deficient number, since it is larger than the sum of its proper divisors (7614319).

203235161 is a wasteful number, since it uses less digits than its factorization.

203235161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20235.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 203235161 is about 14256.0569934327. The cubic root of 203235161 is about 587.9399195482.

Adding to 203235161 its reverse (161532302), we get a palindrome (364767463).

The spelling of 203235161 in words is "two hundred three million, two hundred thirty-five thousand, one hundred sixty-one".