13081000 has 64 divisors (see below), whose sum is σ = 31150080. Its totient is φ = 5140800.

The previous prime is 13080989. The next prime is 13081031. The reversal of 13081000 is 18031.

13081000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13081000² = 342225122000000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102937 + ... + 103063.

It is an arithmetic number, because the mean of its divisors is an integer number (486720).

Almost surely, 2^13081000 is an apocalyptic number.

13081000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13081000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15575040).

13081000 is an abundant number, since it is smaller than the sum of its proper divisors (18069080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13081000 is a wasteful number, since it uses less digits than its factorization.

13081000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 13081000 is about 3616.7665116786. The cubic root of 13081000 is about 235.6208121220.

Adding to 13081000 its reverse (18031), we get a palindrome (13099031).

The spelling of 13081000 in words is "thirteen million, eighty-one thousand".