13521303 has 16 divisors (see below), whose sum is σ = 20172000. Its totient is φ = 8951040.

The previous prime is 13521283. The next prime is 13521323. The reversal of 13521303 is 30312531.

It is an interprime number because it is at equal distance from previous prime (13521283) and next prime (13521323).

It is not a de Polignac number, because 13521303 - 2⁵ = 13521271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521323) 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 15 ways as a sum of consecutive naturals, for example, 2343 + ... + 5703.

It is an arithmetic number, because the mean of its divisors is an integer number (1260750).

Almost surely, 2^13521303 is an apocalyptic number.

13521303 is a deficient number, since it is larger than the sum of its proper divisors (6650697).

13521303 is a wasteful number, since it uses less digits than its factorization.

13521303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519 (or 3513 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13521303 is about 3677.1324425427. The cubic root of 13521303 is about 238.2353379166.

Adding to 13521303 its reverse (30312531), we get a palindrome (43833834).

It can be divided in two parts, 13521 and 303, that added together give a cube (13824 = 24³).

The spelling of 13521303 in words is "thirteen million, five hundred twenty-one thousand, three hundred three".