13431603 has 8 divisors (see below), whose sum is σ = 18076608. Its totient is φ = 8870504.

The previous prime is 13431599. The next prime is 13431619. The reversal of 13431603 is 30613431.

13431603 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13431603 - 2² = 13431599 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 13431603.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20601 + ... + 21242.

It is an arithmetic number, because the mean of its divisors is an integer number (2259576).

Almost surely, 2^13431603 is an apocalyptic number.

13431603 is a deficient number, since it is larger than the sum of its proper divisors (4645005).

13431603 is a wasteful number, since it uses less digits than its factorization.

13431603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41953.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 13431603 is about 3664.9151422646. The cubic root of 13431603 is about 237.7073528023.

The spelling of 13431603 in words is "thirteen million, four hundred thirty-one thousand, six hundred three".