13653231 has 16 divisors (see below), whose sum is σ = 18817920. Its totient is φ = 8799840.

The previous prime is 13653221. The next prime is 13653239. The reversal of 13653231 is 13235631.

It is a happy number.

It is not a de Polignac number, because 13653231 - 2⁷ = 13653103 is a prime.

It is a super-2 number, since 2×13653231² = 372821433478722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13653239) 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, 13576 + ... + 14546.

It is an arithmetic number, because the mean of its divisors is an integer number (1176120).

Almost surely, 2^13653231 is an apocalyptic number.

13653231 is a deficient number, since it is larger than the sum of its proper divisors (5164689).

13653231 is a wasteful number, since it uses less digits than its factorization.

13653231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its digits is 1620, while the sum is 24.

The square root of 13653231 is about 3695.0278754023. The cubic root of 13653231 is about 239.0076560166.

Adding to 13653231 its reverse (13235631), we get a palindrome (26888862).

The spelling of 13653231 in words is "thirteen million, six hundred fifty-three thousand, two hundred thirty-one".