13061881 has 12 divisors (see below), whose sum is σ = 15686400. Its totient is φ = 10833480.

The previous prime is 13061857. The next prime is 13061891. The reversal of 13061881 is 18816031.

It is a happy number.

It is not a de Polignac number, because 13061881 - 2⁵ = 13061849 is a prime.

It is a super-2 number, since 2×13061881² = 341225470516322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13061801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2781 + ... + 5818.

It is an arithmetic number, because the mean of its divisors is an integer number (1307200).

Almost surely, 2^13061881 is an apocalyptic number.

It is an amenable number.

13061881 is a deficient number, since it is larger than the sum of its proper divisors (2624519).

13061881 is an equidigital number, since it uses as much as digits as its factorization.

13061881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8644 (or 8637 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 13061881 is about 3614.1224384351. The cubic root of 13061881 is about 235.5059628285.

The spelling of 13061881 in words is "thirteen million, sixty-one thousand, eight hundred eighty-one".