130806081 has 24 divisors (see below), whose sum is σ = 222902784. Its totient is φ = 72334080.

The previous prime is 130806077. The next prime is 130806101. The reversal of 130806081 is 180608031.

It is not a de Polignac number, because 130806081 - 2² = 130806077 is a prime.

It is a super-2 number, since 2×130806081² = 34220461653157122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130806001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31536 + ... + 35441.

It is an arithmetic number, because the mean of its divisors is an integer number (9287616).

Almost surely, 2^130806081 is an apocalyptic number.

It is an amenable number.

130806081 is a deficient number, since it is larger than the sum of its proper divisors (92096703).

130806081 is a wasteful number, since it uses less digits than its factorization.

130806081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67021 (or 67018 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 130806081 is about 11437.0486140437. The cubic root of 130806081 is about 507.6245818378.

The spelling of 130806081 in words is "one hundred thirty million, eight hundred six thousand, eighty-one".