13133231 has 8 divisors (see below), whose sum is σ = 14009760. Its totient is φ = 12268288.

The previous prime is 13133213. The next prime is 13133233. The reversal of 13133231 is 13233131.

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

It is a de Polignac number, because none of the positive numbers 2^k-13133231 is a prime.

It is a super-2 number, since 2×13133231² = 344963512998722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133233) 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 7 ways as a sum of consecutive naturals, for example, 491 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (1751220).

Almost surely, 2^13133231 is an apocalyptic number.

13133231 is a deficient number, since it is larger than the sum of its proper divisors (876529).

13133231 is a wasteful number, since it uses less digits than its factorization.

13133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5793.

The product of its digits is 162, while the sum is 17.

The square root of 13133231 is about 3623.9799944260. The cubic root of 13133231 is about 235.9339983487.

Adding to 13133231 its reverse (13233131), we get a palindrome (26366362).

The spelling of 13133231 in words is "thirteen million, one hundred thirty-three thousand, two hundred thirty-one".