231126203 has 32 divisors (see below), whose sum is σ = 321200640. Its totient is φ = 160565760.

The previous prime is 231126197. The next prime is 231126223. The reversal of 231126203 is 302621132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231126203 - 2⁶ = 231126139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231126223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20225 + ... + 29517.

It is an arithmetic number, because the mean of its divisors is an integer number (10037520).

Almost surely, 2^231126203 is an apocalyptic number.

231126203 is a deficient number, since it is larger than the sum of its proper divisors (90074437).

231126203 is a wasteful number, since it uses less digits than its factorization.

231126203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347.

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

The square root of 231126203 is about 15202.8353605503. The cubic root of 231126203 is about 613.6909632212.

Adding to 231126203 its reverse (302621132), we get a palindrome (533747335).

The spelling of 231126203 in words is "two hundred thirty-one million, one hundred twenty-six thousand, two hundred three".