13031603 has 8 divisors (see below), whose sum is σ = 14212800. Its totient is φ = 11875968.

The previous prime is 13031561. The next prime is 13031617. The reversal of 13031603 is 30613031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13031603 - 2⁶ = 13031539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031653) 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 7 ways as a sum of consecutive naturals, for example, 5318 + ... + 7371.

It is an arithmetic number, because the mean of its divisors is an integer number (1776600).

Almost surely, 2^13031603 is an apocalyptic number.

13031603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13031603 is a deficient number, since it is larger than the sum of its proper divisors (1181197).

13031603 is a wasteful number, since it uses less digits than its factorization.

13031603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12781.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 13031603 is about 3609.9311627786. The cubic root of 13031603 is about 235.3238510697.

Adding to 13031603 its reverse (30613031), we get a palindrome (43644634).

The spelling of 13031603 in words is "thirteen million, thirty-one thousand, six hundred three".