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130243115 = 526048623
BaseRepresentation
bin1111100001101…
…01101000101011
3100002002000222002
413300311220223
5231320234430
620531321215
73141022352
oct760655053
9302060862
10130243115
1167578642
123775020b
1320ca2342
1413424999
15b67a845
hex7c35a2b

130243115 has 4 divisors (see below), whose sum is σ = 156291744. Its totient is φ = 104194488.

The previous prime is 130243111. The next prime is 130243117. The reversal of 130243115 is 511342031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511342031 = 1730078943.

It is a cyclic number.

It is not a de Polignac number, because 130243115 - 22 = 130243111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130243111) 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, 13024307 + ... + 13024316.

It is an arithmetic number, because the mean of its divisors is an integer number (39072936).

Almost surely, 2130243115 is an apocalyptic number.

130243115 is a deficient number, since it is larger than the sum of its proper divisors (26048629).

130243115 is an equidigital number, since it uses as much as digits as its factorization.

130243115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26048628.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 130243115 is about 11412.4105692005. The cubic root of 130243115 is about 506.8952927594.

Adding to 130243115 its reverse (511342031), we get a palindrome (641585146).

The spelling of 130243115 in words is "one hundred thirty million, two hundred forty-three thousand, one hundred fifteen".

Divisors: 1 5 26048623 130243115