13423881 has 16 divisors (see below), whose sum is σ = 18774144. Its totient is φ = 8515584.

The previous prime is 13423877. The next prime is 13423901. The reversal of 13423881 is 18832431.

It is not a de Polignac number, because 13423881 - 2² = 13423877 is a prime.

It is a super-2 number, since 2×13423881² = 360401162204322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13423831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17355 + ... + 18111.

It is an arithmetic number, because the mean of its divisors is an integer number (1173384).

Almost surely, 2^13423881 is an apocalyptic number.

It is an amenable number.

13423881 is a deficient number, since it is larger than the sum of its proper divisors (5350263).

13423881 is a wasteful number, since it uses less digits than its factorization.

13423881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 4608, while the sum is 30.

The square root of 13423881 is about 3663.8614875565. The cubic root of 13423881 is about 237.6617904060.

The spelling of 13423881 in words is "thirteen million, four hundred twenty-three thousand, eight hundred eighty-one".