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123313013 = 717272389
BaseRepresentation
bin1110101100110…
…01101101110101
322121000221122122
413112121231311
5223032004023
620123005325
73025100105
oct726315565
9277027578
10123313013
116367498a
1235369845
131c716ba5
141253d205
15ac5c2c8
hex7599b75

123313013 has 8 divisors (see below), whose sum is σ = 125274240. Its totient is φ = 121358160.

The previous prime is 123312977. The next prime is 123313027. The reversal of 123313013 is 310313321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123313013 - 28 = 123312757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123312982 and 123313000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123313213) 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 7 ways as a sum of consecutive naturals, for example, 50423 + ... + 52811.

It is an arithmetic number, because the mean of its divisors is an integer number (15659280).

Almost surely, 2123313013 is an apocalyptic number.

It is an amenable number.

123313013 is a deficient number, since it is larger than the sum of its proper divisors (1961227).

123313013 is an equidigital number, since it uses as much as digits as its factorization.

123313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 123313013 is about 11104.6392557345. The cubic root of 123313013 is about 497.7404885974.

Adding to 123313013 its reverse (310313321), we get a palindrome (433626334).

The spelling of 123313013 in words is "one hundred twenty-three million, three hundred thirteen thousand, thirteen".

Divisors: 1 71 727 2389 51617 169619 1736803 123313013