13112231 has 8 divisors (see below), whose sum is σ = 14926464. Its totient is φ = 11401720.

The previous prime is 13112221. The next prime is 13112233. The reversal of 13112231 is 13221131.

13112231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13112231 - 2¹⁰ = 13111207 is a prime.

It is a super-2 number, since 2×13112231² = 343861203594722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112233) by changing a digit.

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, 25661 + ... + 26166.

It is an arithmetic number, because the mean of its divisors is an integer number (1865808).

Almost surely, 2^13112231 is an apocalyptic number.

13112231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13112231 is a deficient number, since it is larger than the sum of its proper divisors (1814233).

13112231 is a wasteful number, since it uses less digits than its factorization.

13112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51861.

The product of its digits is 36, while the sum is 14.

The square root of 13112231 is about 3621.0814682909. The cubic root of 13112231 is about 235.8081786597.

Adding to 13112231 its reverse (13221131), we get a palindrome (26333362).

Subtracting 13112231 from its reverse (13221131), we obtain a square (108900 = 330²).

The spelling of 13112231 in words is "thirteen million, one hundred twelve thousand, two hundred thirty-one".