Base | Representation |
---|---|
bin | 11011100101001… |
… | …11010110111011 |
3 | 121010100221000110 |
4 | 31302213112323 |
5 | 433212402334 |
6 | 34543035403 |
7 | 5506426401 |
oct | 1562472673 |
9 | 533327013 |
10 | 231372219 |
11 | 109670411 |
12 | 6559bb63 |
13 | 38c1ca50 |
14 | 22a2b471 |
15 | 154a4ae9 |
hex | dca75bb |
231372219 has 16 divisors (see below), whose sum is σ = 333043200. Its totient is φ = 142033056.
The previous prime is 231372209. The next prime is 231372221. The reversal of 231372219 is 912273132.
It is not a de Polignac number, because 231372219 - 216 = 231306683 is a prime.
It is a super-2 number, since 2×2313722192 = 107066207449967922, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (231372209) 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, 9262 + ... + 23420.
It is an arithmetic number, because the mean of its divisors is an integer number (20815200).
Almost surely, 2231372219 is an apocalyptic number.
231372219 is a deficient number, since it is larger than the sum of its proper divisors (101670981).
231372219 is a wasteful number, since it uses less digits than its factorization.
231372219 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 14594.
The product of its digits is 4536, while the sum is 30.
The square root of 231372219 is about 15210.9243308880. The cubic root of 231372219 is about 613.9086282279.
The spelling of 231372219 in words is "two hundred thirty-one million, three hundred seventy-two thousand, two hundred nineteen".
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