13251387 has 8 divisors (see below), whose sum is σ = 17685504. Its totient is φ = 8825768.

The previous prime is 13251383. The next prime is 13251391. The reversal of 13251387 is 78315231.

13251387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13251383) and next prime (13251391).

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 13251387 - 2² = 13251383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13251383) 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, 4258 + ... + 6680.

It is an arithmetic number, because the mean of its divisors is an integer number (2210688).

Almost surely, 2^13251387 is an apocalyptic number.

13251387 is a deficient number, since it is larger than the sum of its proper divisors (4434117).

13251387 is a wasteful number, since it uses less digits than its factorization.

13251387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249.

The product of its digits is 5040, while the sum is 30.

The square root of 13251387 is about 3640.2454587569. The cubic root of 13251387 is about 236.6394310610.

The spelling of 13251387 in words is "thirteen million, two hundred fifty-one thousand, three hundred eighty-seven".