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130712511 = 3674571423
BaseRepresentation
bin1111100101010…
…00001110111111
3100002221212212010
413302220032333
5231430300021
620545342303
73145016016
oct762501677
9302855763
10130712511
1167869276
1237937993
1321107ba7
1413507a7d
15b71e976
hex7ca83bf

130712511 has 16 divisors (see below), whose sum is σ = 177396224. Its totient is φ = 85593024.

The previous prime is 130712509. The next prime is 130712537. The reversal of 130712511 is 115217031.

It is a happy number.

It is not a de Polignac number, because 130712511 - 21 = 130712509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130712581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91146 + ... + 92568.

It is an arithmetic number, because the mean of its divisors is an integer number (11087264).

Almost surely, 2130712511 is an apocalyptic number.

130712511 is a deficient number, since it is larger than the sum of its proper divisors (46683713).

130712511 is a wasteful number, since it uses less digits than its factorization.

130712511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 130712511 is about 11432.9572289937. The cubic root of 130712511 is about 507.5035126388.

Adding to 130712511 its reverse (115217031), we get a palindrome (245929542).

The spelling of 130712511 in words is "one hundred thirty million, seven hundred twelve thousand, five hundred eleven".

Divisors: 1 3 67 201 457 1371 1423 4269 30619 91857 95341 286023 650311 1950933 43570837 130712511