13231235 has 4 divisors (see below), whose sum is σ = 15877488. Its totient is φ = 10584984.

The previous prime is 13231189. The next prime is 13231247. The reversal of 13231235 is 53213231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13231235 - 2⁶ = 13231171 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 1323119 + ... + 1323128.

It is an arithmetic number, because the mean of its divisors is an integer number (3969372).

Almost surely, 2^13231235 is an apocalyptic number.

13231235 is a deficient number, since it is larger than the sum of its proper divisors (2646253).

13231235 is an equidigital number, since it uses as much as digits as its factorization.

13231235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646252.

The product of its digits is 540, while the sum is 20.

The square root of 13231235 is about 3637.4764604049. The cubic root of 13231235 is about 236.5194140088.

Adding to 13231235 its reverse (53213231), we get a palindrome (66444466).

The spelling of 13231235 in words is "thirteen million, two hundred thirty-one thousand, two hundred thirty-five".