13281607 has 4 divisors (see below), whose sum is σ = 14062896. Its totient is φ = 12500320.

The previous prime is 13281571. The next prime is 13281613. The reversal of 13281607 is 70618231.

13281607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13281607 - 2²³ = 4892999 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 (13281617) 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, 390619 + ... + 390652.

It is an arithmetic number, because the mean of its divisors is an integer number (3515724).

Almost surely, 2^13281607 is an apocalyptic number.

13281607 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13281607 is a deficient number, since it is larger than the sum of its proper divisors (781289).

13281607 is an equidigital number, since it uses as much as digits as its factorization.

13281607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781288.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13281607 is about 3644.3939139451. The cubic root of 13281607 is about 236.8191811583.

Adding to 13281607 its reverse (70618231), we get a palindrome (83899838).

The spelling of 13281607 in words is "thirteen million, two hundred eighty-one thousand, six hundred seven".