13401081 has 6 divisors (see below), whose sum is σ = 19357130. Its totient is φ = 8934048.

The previous prime is 13401077. The next prime is 13401107. The reversal of 13401081 is 18010431.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 5363856 = 2835^2 + 2316^2 .

It is not a de Polignac number, because 13401081 - 2² = 13401077 is a prime.

It is a super-2 number, since 2×13401081² = 359177943937122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13401041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 744496 + ... + 744513.

Almost surely, 2^13401081 is an apocalyptic number.

It is an amenable number.

13401081 is a deficient number, since it is larger than the sum of its proper divisors (5956049).

13401081 is a wasteful number, since it uses less digits than its factorization.

13401081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489015 (or 1489012 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 13401081 is about 3660.7486939149. The cubic root of 13401081 is about 237.5271606980.

The spelling of 13401081 in words is "thirteen million, four hundred one thousand, eighty-one".