130888861 has 12 divisors (see below), whose sum is σ = 138681180. Its totient is φ = 123385920.

The previous prime is 130888847. The next prime is 130888889. The reversal of 130888861 is 168888031.

It can be written as a sum of positive squares in 2 ways, for example, as 37283236 + 93605625 = 6106^2 + 9675^2 .

It is not a de Polignac number, because 130888861 - 2⁷ = 130888733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130888801) 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, 52401 + ... + 54841.

It is an arithmetic number, because the mean of its divisors is an integer number (11556765).

Almost surely, 2^130888861 is an apocalyptic number.

It is an amenable number.

130888861 is a deficient number, since it is larger than the sum of its proper divisors (7792319).

130888861 is an equidigital number, since it uses as much as digits as its factorization.

130888861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 130888861 is about 11440.6669823048. Note that the first 3 decimals coincide. The cubic root of 130888861 is about 507.7316418496.

The spelling of 130888861 in words is "one hundred thirty million, eight hundred eighty-eight thousand, eight hundred sixty-one".