13307881 has 4 divisors (see below), whose sum is σ = 13330000. Its totient is φ = 13285764.

The previous prime is 13307867. The next prime is 13307887. The reversal of 13307881 is 18870331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13307881 - 2⁵ = 13307849 is a prime.

It is a super-2 number, since 2×13307881² = 354199393420322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13307887) 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, 10131 + ... + 11368.

It is an arithmetic number, because the mean of its divisors is an integer number (3332500).

Almost surely, 2^13307881 is an apocalyptic number.

It is an amenable number.

13307881 is a deficient number, since it is larger than the sum of its proper divisors (22119).

13307881 is an equidigital number, since it uses as much as digits as its factorization.

13307881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22118.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 13307881 is about 3647.9968475864. The cubic root of 13307881 is about 236.9752387977.

The spelling of 13307881 in words is "thirteen million, three hundred seven thousand, eight hundred eighty-one".