13288231 has 4 divisors (see below), whose sum is σ = 14496264. Its totient is φ = 12080200.

The previous prime is 13288211. The next prime is 13288259.

13288231 is nontrivially palindromic in base 10.

13288231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13288231 - 2⁵ = 13288199 is a prime.

It is a super-2 number, since 2×13288231² = 353154166218722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13288231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13288211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604000 + ... + 604021.

It is an arithmetic number, because the mean of its divisors is an integer number (3624066).

Almost surely, 2^13288231 is an apocalyptic number.

13288231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13288231 is a deficient number, since it is larger than the sum of its proper divisors (1208033).

13288231 is a wasteful number, since it uses less digits than its factorization.

13288231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208032.

The product of its digits is 2304, while the sum is 28.

The square root of 13288231 is about 3645.3025937499. The cubic root of 13288231 is about 236.8585446064.

It can be divided in two parts, 1328 and 8231, that added together give a palindrome (9559).

The spelling of 13288231 in words is "thirteen million, two hundred eighty-eight thousand, two hundred thirty-one".