13331881 has 8 divisors (see below), whose sum is σ = 14016384. Its totient is φ = 12656160.

The previous prime is 13331873. The next prime is 13331887. The reversal of 13331881 is 18813331.

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 13331881 - 2³ = 13331873 is a prime.

It is a super-2 number, since 2×13331881² = 355478101996322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13331887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036 + ... + 5266.

It is an arithmetic number, because the mean of its divisors is an integer number (1752048).

Almost surely, 2^13331881 is an apocalyptic number.

It is an amenable number.

13331881 is a deficient number, since it is larger than the sum of its proper divisors (684503).

13331881 is a wasteful number, since it uses less digits than its factorization.

13331881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its digits is 1728, while the sum is 28.

The square root of 13331881 is about 3651.2848423534. The cubic root of 13331881 is about 237.1176103289.

It can be divided in two parts, 13 and 331881, that multiplied together give a triangular number (4314453 = T₂₉₃₇).

The spelling of 13331881 in words is "thirteen million, three hundred thirty-one thousand, eight hundred eighty-one".