130806289 has 4 divisors (see below), whose sum is σ = 131227200. Its totient is φ = 130385380.

The previous prime is 130806283. The next prime is 130806331. The reversal of 130806289 is 982608031.

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 130806289 - 2¹¹ = 130804241 is a prime.

It is a super-2 number, since 2×130806289² = 34220570483903042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130806283) 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, 209989 + ... + 210610.

It is an arithmetic number, because the mean of its divisors is an integer number (32806800).

Almost surely, 2^130806289 is an apocalyptic number.

It is an amenable number.

130806289 is a deficient number, since it is larger than the sum of its proper divisors (420911).

130806289 is an equidigital number, since it uses as much as digits as its factorization.

130806289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420910.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 130806289 is about 11437.0577072952. The cubic root of 130806289 is about 507.6248509024.

The spelling of 130806289 in words is "one hundred thirty million, eight hundred six thousand, two hundred eighty-nine".