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12723113 = 1331131241
BaseRepresentation
bin110000100010…
…001110101001
3212221101211102
4300202032221
511224114423
61132411145
7213100424
oct60421651
925841742
1012723113
117200077
124316ab5
132836190
1419929bb
1511b4c28
hexc223a9

12723113 has 16 divisors (see below), whose sum is σ = 14310912. Its totient is φ = 11232000.

The previous prime is 12723107. The next prime is 12723119. The reversal of 12723113 is 31132721.

It is an interprime number because it is at equal distance from previous prime (12723107) and next prime (12723119).

It is not a de Polignac number, because 12723113 - 210 = 12722089 is a prime.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12723119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52673 + ... + 52913.

It is an arithmetic number, because the mean of its divisors is an integer number (894432).

Almost surely, 212723113 is an apocalyptic number.

12723113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12723113 is a deficient number, since it is larger than the sum of its proper divisors (1587799).

12723113 is a wasteful number, since it uses less digits than its factorization.

12723113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416.

The product of its digits is 252, while the sum is 20.

The square root of 12723113 is about 3566.9472942560. The cubic root of 12723113 is about 233.4521052918.

Adding to 12723113 its reverse (31132721), we get a palindrome (43855834).

The spelling of 12723113 in words is "twelve million, seven hundred twenty-three thousand, one hundred thirteen".

Divisors: 1 13 31 131 241 403 1703 3133 4061 7471 31571 52793 97123 410423 978701 12723113