13021235 has 8 divisors (see below), whose sum is σ = 16544736. Its totient is φ = 9804160.

The previous prime is 13021219. The next prime is 13021247. The reversal of 13021235 is 53212031.

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

It is not a de Polignac number, because 13021235 - 2⁴ = 13021219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76511 + ... + 76680.

It is an arithmetic number, because the mean of its divisors is an integer number (2068092).

Almost surely, 2^13021235 is an apocalyptic number.

13021235 is a deficient number, since it is larger than the sum of its proper divisors (3523501).

13021235 is a wasteful number, since it uses less digits than its factorization.

13021235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153213.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13021235 is about 3608.4948385719. The cubic root of 13021235 is about 235.2614262853.

Adding to 13021235 its reverse (53212031), we get a palindrome (66233266).

The spelling of 13021235 in words is "thirteen million, twenty-one thousand, two hundred thirty-five".