13031003 has 4 divisors (see below), whose sum is σ = 13244688. Its totient is φ = 12817320.

The previous prime is 13030999. The next prime is 13031009. The reversal of 13031003 is 30013031.

13031003 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30013031 = 37 ⋅811163.

It is not a de Polignac number, because 13031003 - 2² = 13030999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031009) 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, 106751 + ... + 106872.

It is an arithmetic number, because the mean of its divisors is an integer number (3311172).

Almost surely, 2^13031003 is an apocalyptic number.

13031003 is a deficient number, since it is larger than the sum of its proper divisors (213685).

13031003 is an equidigital number, since it uses as much as digits as its factorization.

13031003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213684.

The product of its (nonzero) digits is 27, while the sum is 11.

The square root of 13031003 is about 3609.8480577443. The cubic root of 13031003 is about 235.3202394271.

Adding to 13031003 its reverse (30013031), we get a palindrome (43044034).

The spelling of 13031003 in words is "thirteen million, thirty-one thousand, three".