13333231 has 8 divisors (see below), whose sum is σ = 14228720. Its totient is φ = 12457152.

The previous prime is 13333223. The next prime is 13333249. The reversal of 13333231 is 13233331.

13333231 is nontrivially palindromic in base 5.

13333231 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 a cyclic number.

It is not a de Polignac number, because 13333231 - 2³ = 13333223 is a prime.

It is a super-2 number, since 2×13333231² = 355550097798722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 13333199 and 13333208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13333211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3420 + ... + 6193.

It is an arithmetic number, because the mean of its divisors is an integer number (1778590).

Almost surely, 2^13333231 is an apocalyptic number.

13333231 is a deficient number, since it is larger than the sum of its proper divisors (895489).

13333231 is an equidigital number, since it uses as much as digits as its factorization.

13333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705.

The product of its digits is 486, while the sum is 19.

The square root of 13333231 is about 3651.4697041055. The cubic root of 13333231 is about 237.1256136499.

Adding to 13333231 its reverse (13233331), we get a palindrome (26566562).

The spelling of 13333231 in words is "thirteen million, three hundred thirty-three thousand, two hundred thirty-one".