Search a number
-
+
130188131 = 1279101789
BaseRepresentation
bin1111100001010…
…00001101100011
3100001222020112122
413300220031203
5231312010011
620530214455
73140403143
oct760501543
9301866478
10130188131
11675402a7
123772442b
1320c832c8
141340c923
15b6693db
hex7c28363

130188131 has 4 divisors (see below), whose sum is σ = 130291200. Its totient is φ = 130085064.

The previous prime is 130188109. The next prime is 130188137. The reversal of 130188131 is 131881031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130188131 - 214 = 130171747 is a prime.

It is a super-2 number, since 2×1301881312 = 33897898906546322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130188131.

It is not an unprimeable number, because it can be changed into a prime (130188137) 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 3 ways as a sum of consecutive naturals, for example, 49616 + ... + 52173.

It is an arithmetic number, because the mean of its divisors is an integer number (32572800).

Almost surely, 2130188131 is an apocalyptic number.

130188131 is a deficient number, since it is larger than the sum of its proper divisors (103069).

130188131 is a wasteful number, since it uses less digits than its factorization.

130188131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103068.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 130188131 is about 11410.0013584574. The cubic root of 130188131 is about 506.8239516786.

The spelling of 130188131 in words is "one hundred thirty million, one hundred eighty-eight thousand, one hundred thirty-one".

Divisors: 1 1279 101789 130188131