130971636 has 144 divisors (see below), whose sum is σ = 367407040. Its totient is φ = 39191040.

The previous prime is 130971629. The next prime is 130971647. The reversal of 130971636 is 636179031.

130971636 is a `hidden beast` number, since 13 + 0 + 9 + 7 + 1 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 130971636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1794096 + ... + 1794168.

Almost surely, 2^130971636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130971636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183703520).

130971636 is an abundant number, since it is smaller than the sum of its proper divisors (236435404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130971636 is a wasteful number, since it uses less digits than its factorization.

130971636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 130971636 is about 11444.2839880877. The cubic root of 130971636 is about 507.8386502687.

The spelling of 130971636 in words is "one hundred thirty million, nine hundred seventy-one thousand, six hundred thirty-six".