13081299 has 16 divisors (see below), whose sum is σ = 21745920. Its totient is φ = 6795360.

The previous prime is 13081297. The next prime is 13081333. The reversal of 13081299 is 99218031.

It is not a de Polignac number, because 13081299 - 2¹ = 13081297 is a prime.

It is a super-2 number, since 2×13081299² = 342240767054802, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (13081297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28084 + ... + 28545.

It is an arithmetic number, because the mean of its divisors is an integer number (1359120).

Almost surely, 2^13081299 is an apocalyptic number.

13081299 is a deficient number, since it is larger than the sum of its proper divisors (8664621).

13081299 is a wasteful number, since it uses less digits than its factorization.

13081299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56650.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 13081299 is about 3616.8078467068. The cubic root of 13081299 is about 235.6226073488.

The spelling of 13081299 in words is "thirteen million, eighty-one thousand, two hundred ninety-nine".