13134581 has 8 divisors (see below), whose sum is σ = 13429944. Its totient is φ = 12841920.

The previous prime is 13134577. The next prime is 13134599. The reversal of 13134581 is 18543131.

It can be written as a sum of positive squares in 4 ways, for example, as 6027025 + 7107556 = 2455^2 + 2666^2 .

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 13134581 - 2² = 13134577 is a prime.

It is a super-2 number, since 2×13134581² = 345034436091122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13134581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13134551) 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, 11471 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (1678743).

Almost surely, 2^13134581 is an apocalyptic number.

It is an amenable number.

13134581 is a deficient number, since it is larger than the sum of its proper divisors (295363).

13134581 is a wasteful number, since it uses less digits than its factorization.

13134581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its digits is 1440, while the sum is 26.

The square root of 13134581 is about 3624.1662489461. The cubic root of 13134581 is about 235.9420821676.

The spelling of 13134581 in words is "thirteen million, one hundred thirty-four thousand, five hundred eighty-one".