203132091 has 4 divisors (see below), whose sum is σ = 270842792. Its totient is φ = 135421392.

The previous prime is 203132071. The next prime is 203132107. The reversal of 203132091 is 190231302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203132091 - 2¹⁰ = 203131067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203132071) 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, 33855346 + ... + 33855351.

It is an arithmetic number, because the mean of its divisors is an integer number (67710698).

Almost surely, 2^203132091 is an apocalyptic number.

203132091 is a deficient number, since it is larger than the sum of its proper divisors (67710701).

203132091 is an equidigital number, since it uses as much as digits as its factorization.

203132091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67710700.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 203132091 is about 14252.4415803048. The cubic root of 203132091 is about 587.8405121847.

Adding to 203132091 its reverse (190231302), we get a palindrome (393363393).

The spelling of 203132091 in words is "two hundred three million, one hundred thirty-two thousand, ninety-one".