13011387 has 4 divisors (see below), whose sum is σ = 17348520. Its totient is φ = 8674256.

The previous prime is 13011367. The next prime is 13011407. The reversal of 13011387 is 78311031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78311031 = 3 ⋅26103677.

It is an interprime number because it is at equal distance from previous prime (13011367) and next prime (13011407).

It is a cyclic number.

It is not a de Polignac number, because 13011387 - 2¹⁵ = 12978619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13011337) 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 3 ways as a sum of consecutive naturals, for example, 2168562 + ... + 2168567.

It is an arithmetic number, because the mean of its divisors is an integer number (4337130).

Almost surely, 2^13011387 is an apocalyptic number.

13011387 is a deficient number, since it is larger than the sum of its proper divisors (4337133).

13011387 is an equidigital number, since it uses as much as digits as its factorization.

13011387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4337132.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 13011387 is about 3607.1300226080. The cubic root of 13011387 is about 235.2021016807.

The spelling of 13011387 in words is "thirteen million, eleven thousand, three hundred eighty-seven".