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130611217 = 1111873747
BaseRepresentation
bin1111100100011…
…11100000010001
3100002202201220111
413302033200101
5231414024332
620543241321
73144114502
oct762174021
9302681814
10130611217
11677aa160
12378a9241
13210a0a59
14134bcba9
15b6ee947
hex7c8f811

130611217 has 4 divisors (see below), whose sum is σ = 142484976. Its totient is φ = 118737460.

The previous prime is 130611209. The next prime is 130611223. The reversal of 130611217 is 712116031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 712116031 = 1164737821.

It is a cyclic number.

It is not a de Polignac number, because 130611217 - 23 = 130611209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130617217) 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, 5936863 + ... + 5936884.

It is an arithmetic number, because the mean of its divisors is an integer number (35621244).

Almost surely, 2130611217 is an apocalyptic number.

It is an amenable number.

130611217 is a deficient number, since it is larger than the sum of its proper divisors (11873759).

130611217 is a wasteful number, since it uses less digits than its factorization.

130611217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11873758.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 130611217 is about 11428.5264579472. The cubic root of 130611217 is about 507.3723842940.

Adding to 130611217 its reverse (712116031), we get a palindrome (842727248).

The spelling of 130611217 in words is "one hundred thirty million, six hundred eleven thousand, two hundred seventeen".

Divisors: 1 11 11873747 130611217