13231403 has 4 divisors (see below), whose sum is σ = 13238688. Its totient is φ = 13224120.

The previous prime is 13231373. The next prime is 13231411. The reversal of 13231403 is 30413231.

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 13231403 - 2⁸ = 13231147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231103) 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, 1550 + ... + 5372.

It is an arithmetic number, because the mean of its divisors is an integer number (3309672).

Almost surely, 2^13231403 is an apocalyptic number.

13231403 is a deficient number, since it is larger than the sum of its proper divisors (7285).

13231403 is an equidigital number, since it uses as much as digits as its factorization.

13231403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284.

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

The square root of 13231403 is about 3637.4995532646. The cubic root of 13231403 is about 236.5204150515.

Adding to 13231403 its reverse (30413231), we get a palindrome (43644634).

The spelling of 13231403 in words is "thirteen million, two hundred thirty-one thousand, four hundred three".