13036991 has 4 divisors (see below), whose sum is σ = 14222184. Its totient is φ = 11851800.

The previous prime is 13036973. The next prime is 13036999. The reversal of 13036991 is 19963031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19963031 = 11 ⋅1814821.

It is a cyclic number.

It is not a de Polignac number, because 13036991 - 2¹⁴ = 13020607 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 (13036999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592580 + ... + 592601.

It is an arithmetic number, because the mean of its divisors is an integer number (3555546).

Almost surely, 2^13036991 is an apocalyptic number.

13036991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13036991 is a deficient number, since it is larger than the sum of its proper divisors (1185193).

13036991 is a wasteful number, since it uses less digits than its factorization.

13036991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185192.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 13036991 is about 3610.6773602747. The cubic root of 13036991 is about 235.3562786538.

The spelling of 13036991 in words is "thirteen million, thirty-six thousand, nine hundred ninety-one".