13281641 has 8 divisors (see below), whose sum is σ = 14329224. Its totient is φ = 12263680.

The previous prime is 13281637. The next prime is 13281647. The reversal of 13281641 is 14618231.

13281641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8976016 + 4305625 = 2996^2 + 2075^2 .

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 13281641 - 2² = 13281637 is a prime.

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 13281641.

It is not an unprimeable number, because it can be changed into a prime (13281647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6470 + ... + 8271.

It is an arithmetic number, because the mean of its divisors is an integer number (1791153).

Almost surely, 2^13281641 is an apocalyptic number.

It is an amenable number.

13281641 is a deficient number, since it is larger than the sum of its proper divisors (1047583).

13281641 is a wasteful number, since it uses less digits than its factorization.

13281641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14811.

The product of its digits is 1152, while the sum is 26.

The square root of 13281641 is about 3644.3985786409. The cubic root of 13281641 is about 236.8193832384.

Adding to 13281641 its reverse (14618231), we get a palindrome (27899872).

The spelling of 13281641 in words is "thirteen million, two hundred eighty-one thousand, six hundred forty-one".