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130612307 = 718658901
BaseRepresentation
bin1111100100011…
…11110001010011
3100002202210101212
413302033301103
5231414043212
620543250335
73144120620
oct762176123
9302683355
10130612307
11677aaa61
12378a99ab
13210a13b7
14134bd347
15b6eee22
hex7c8fc53

130612307 has 4 divisors (see below), whose sum is σ = 149271216. Its totient is φ = 111953400.

The previous prime is 130612301. The next prime is 130612373. The reversal of 130612307 is 703216031.

It is a happy number.

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 130612307 - 214 = 130595923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130612301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9329444 + ... + 9329457.

It is an arithmetic number, because the mean of its divisors is an integer number (37317804).

Almost surely, 2130612307 is an apocalyptic number.

130612307 is a deficient number, since it is larger than the sum of its proper divisors (18658909).

130612307 is an equidigital number, since it uses as much as digits as its factorization.

130612307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18658908.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 130612307 is about 11428.5741455354. The cubic root of 130612307 is about 507.3737956949.

Adding to 130612307 its reverse (703216031), we get a palindrome (833828338).

The spelling of 130612307 in words is "one hundred thirty million, six hundred twelve thousand, three hundred seven".

Divisors: 1 7 18658901 130612307