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13124997 = 34315227
BaseRepresentation
bin110010000100…
…010110000101
3220200211010000
4302010112011
511324444442
61145151513
7216363204
oct62042605
926624100
1013124997
117455006
12448b599
132947092
141a5923b
151243d4c
hexc84585

13124997 has 20 divisors (see below), whose sum is σ = 20242816. Its totient is φ = 8466120.

The previous prime is 13124987. The next prime is 13125001. The reversal of 13124997 is 79942131.

It is a de Polignac number, because none of the positive numbers 2k-13124997 is a prime.

It is a super-3 number, since 3×131249973 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124957) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103 + ... + 5124.

Almost surely, 213124997 is an apocalyptic number.

It is an amenable number.

13124997 is a deficient number, since it is larger than the sum of its proper divisors (7117819).

13124997 is an equidigital number, since it uses as much as digits as its factorization.

13124997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270 (or 5261 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 13124997 is about 3622.8437725080. The cubic root of 13124997 is about 235.8846810437.

The spelling of 13124997 in words is "thirteen million, one hundred twenty-four thousand, nine hundred ninety-seven".

Divisors: 1 3 9 27 31 81 93 279 837 2511 5227 15681 47043 141129 162037 423387 486111 1458333 4374999 13124997