13431203 has 4 divisors (see below), whose sum is σ = 13439880. Its totient is φ = 13422528.

The previous prime is 13431191. The next prime is 13431217. The reversal of 13431203 is 30213431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13431203 - 2⁸ = 13430947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13431403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313 + ... + 5346.

It is an arithmetic number, because the mean of its divisors is an integer number (3359970).

Almost surely, 2^13431203 is an apocalyptic number.

13431203 is a deficient number, since it is larger than the sum of its proper divisors (8677).

13431203 is an equidigital number, since it uses as much as digits as its factorization.

13431203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8676.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13431203 is about 3664.8605703355. The cubic root of 13431203 is about 237.7049930967.

Adding to 13431203 its reverse (30213431), we get a palindrome (43644634).

The spelling of 13431203 in words is "thirteen million, four hundred thirty-one thousand, two hundred three".