13181255 has 4 divisors (see below), whose sum is σ = 15817512. Its totient is φ = 10545000.

The previous prime is 13181227. The next prime is 13181257. The reversal of 13181255 is 55218131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55218131 = 7219 ⋅7649.

It is not a de Polignac number, because 13181255 - 2¹⁸ = 12919111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13181257) 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, 1318121 + ... + 1318130.

It is an arithmetic number, because the mean of its divisors is an integer number (3954378).

Almost surely, 2^13181255 is an apocalyptic number.

13181255 is a deficient number, since it is larger than the sum of its proper divisors (2636257).

13181255 is an equidigital number, since it uses as much as digits as its factorization.

13181255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636256.

The product of its digits is 1200, while the sum is 26.

The square root of 13181255 is about 3630.5998127031. The cubic root of 13181255 is about 236.2212267712.

Adding to 13181255 its reverse (55218131), we get a palindrome (68399386).

The spelling of 13181255 in words is "thirteen million, one hundred eighty-one thousand, two hundred fifty-five".