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130587013 = 177681589
BaseRepresentation
bin1111100100010…
…01100110000101
3100002201111201001
413302021212011
5231412241023
620542533301
73143654104
oct762114605
9302644631
10130587013
1167792a57
1237897231
1321092a2b
14134b403b
15b6e76ad
hex7c89985

130587013 has 4 divisors (see below), whose sum is σ = 138268620. Its totient is φ = 122905408.

The previous prime is 130587011. The next prime is 130587049. The reversal of 130587013 is 310785031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310785031 = 1072904533.

It can be written as a sum of positive squares in 2 ways, for example, as 69856164 + 60730849 = 8358^2 + 7793^2 .

It is a cyclic number.

It is not a de Polignac number, because 130587013 - 21 = 130587011 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 (130587011) 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, 3840778 + ... + 3840811.

It is an arithmetic number, because the mean of its divisors is an integer number (34567155).

Almost surely, 2130587013 is an apocalyptic number.

It is an amenable number.

130587013 is a deficient number, since it is larger than the sum of its proper divisors (7681607).

130587013 is an equidigital number, since it uses as much as digits as its factorization.

130587013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7681606.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 130587013 is about 11427.4674797175. The cubic root of 130587013 is about 507.3410414019.

The spelling of 130587013 in words is "one hundred thirty million, five hundred eighty-seven thousand, thirteen".

Divisors: 1 17 7681589 130587013