13601231 has 16 divisors (see below), whose sum is σ = 16123968. Its totient is φ = 11232000.

The previous prime is 13601227. The next prime is 13601239. The reversal of 13601231 is 13210631.

13601231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13601231 - 2² = 13601227 is a prime.

It is a super-2 number, since 2×13601231² = 369986969430722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13601239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22331 + ... + 22931.

It is an arithmetic number, because the mean of its divisors is an integer number (1007748).

Almost surely, 2^13601231 is an apocalyptic number.

13601231 is a deficient number, since it is larger than the sum of its proper divisors (2522737).

13601231 is an equidigital number, since it uses as much as digits as its factorization.

13601231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 13601231 is about 3687.9846800116. The cubic root of 13601231 is about 238.7038400202.

Adding to 13601231 its reverse (13210631), we get a palindrome (26811862).

The spelling of 13601231 in words is "thirteen million, six hundred one thousand, two hundred thirty-one".