130287861 has 12 divisors (see below), whose sum is σ = 205302240. Its totient is φ = 78962280.

The previous prime is 130287853. The next prime is 130287869. The reversal of 130287861 is 168782031.

It is an interprime number because it is at equal distance from previous prime (130287853) and next prime (130287869).

It is not a de Polignac number, because 130287861 - 2³ = 130287853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130287869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 657921 + ... + 658118.

It is an arithmetic number, because the mean of its divisors is an integer number (17108520).

Almost surely, 2^130287861 is an apocalyptic number.

130287861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130287861 is a deficient number, since it is larger than the sum of its proper divisors (75014379).

130287861 is a wasteful number, since it uses less digits than its factorization.

130287861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316056 (or 1316053 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 130287861 is about 11414.3708105178. The cubic root of 130287861 is about 506.9533353407.

The spelling of 130287861 in words is "one hundred thirty million, two hundred eighty-seven thousand, eight hundred sixty-one".