13231003 has 4 divisors (see below), whose sum is σ = 13806288. Its totient is φ = 12655720.

The previous prime is 13230991. The next prime is 13231019. The reversal of 13231003 is 30013231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231003 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287608 + ... + 287653.

It is an arithmetic number, because the mean of its divisors is an integer number (3451572).

Almost surely, 2^13231003 is an apocalyptic number.

13231003 is a deficient number, since it is larger than the sum of its proper divisors (575285).

13231003 is an equidigital number, since it uses as much as digits as its factorization.

13231003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575284.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 13231003 is about 3637.4445700244. Note that the first 3 decimals coincide. The cubic root of 13231003 is about 236.5180316026.

Adding to 13231003 its reverse (30013231), we get a palindrome (43244234).

The spelling of 13231003 in words is "thirteen million, two hundred thirty-one thousand, three".