13151387 has 4 divisors (see below), whose sum is σ = 13925016. Its totient is φ = 12377760.

The previous prime is 13151381. The next prime is 13151389. The reversal of 13151387 is 78315131.

13151387 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, and also an emirpimes, since its reverse is a distinct semiprime: 78315131 = 19 ⋅4121849.

It is a cyclic number.

It is not a de Polignac number, because 13151387 - 2⁴ = 13151371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13151381) 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, 386789 + ... + 386822.

It is an arithmetic number, because the mean of its divisors is an integer number (3481254).

Almost surely, 2^13151387 is an apocalyptic number.

13151387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13151387 is a deficient number, since it is larger than the sum of its proper divisors (773629).

13151387 is an equidigital number, since it uses as much as digits as its factorization.

13151387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773628.

The product of its digits is 2520, while the sum is 29.

The square root of 13151387 is about 3626.4841099886. The cubic root of 13151387 is about 236.0426703942.

The spelling of 13151387 in words is "thirteen million, one hundred fifty-one thousand, three hundred eighty-seven".