431121203 has 4 divisors (see below), whose sum is σ = 431192328. Its totient is φ = 431050080.

The previous prime is 431121193. The next prime is 431121209. The reversal of 431121203 is 302121134.

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

It is a cyclic number.

It is not a de Polignac number, because 431121203 - 2¹² = 431117107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431121209) 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, 25526 + ... + 38907.

It is an arithmetic number, because the mean of its divisors is an integer number (107798082).

Almost surely, 2^431121203 is an apocalyptic number.

431121203 is a deficient number, since it is larger than the sum of its proper divisors (71125).

431121203 is an equidigital number, since it uses as much as digits as its factorization.

431121203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71124.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 431121203 is about 20763.4583583757. The cubic root of 431121203 is about 755.4396824956.

Adding to 431121203 its reverse (302121134), we get a palindrome (733242337).

The spelling of 431121203 in words is "four hundred thirty-one million, one hundred twenty-one thousand, two hundred three".