Base | Representation |
---|---|
bin | 10001111101010101… |
… | …000011010111111111 |
3 | 1211202211111112012022 |
4 | 101331111003113333 |
5 | 303442312240111 |
6 | 12505215430355 |
7 | 1251560612606 |
oct | 217525032777 |
9 | 54684445168 |
10 | 19282540031 |
11 | 81a55447a7 |
12 | 38a18253bb |
13 | 1a83b64301 |
14 | d0ccc4a3d |
15 | 77cc9a2db |
hex | 47d5435ff |
19282540031 has 4 divisors (see below), whose sum is σ = 19282875600. Its totient is φ = 19282204464.
The previous prime is 19282540021. The next prime is 19282540063. The reversal of 19282540031 is 13004528291.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 19282540031 - 210 = 19282539007 is a prime.
It is a super-2 number, since 2×192825400312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 19282539973 and 19282540000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (19282540021) 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, 57371 + ... + 204588.
It is an arithmetic number, because the mean of its divisors is an integer number (4820718900).
Almost surely, 219282540031 is an apocalyptic number.
19282540031 is a deficient number, since it is larger than the sum of its proper divisors (335569).
19282540031 is an equidigital number, since it uses as much as digits as its factorization.
19282540031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 335568.
The product of its (nonzero) digits is 17280, while the sum is 35.
The spelling of 19282540031 in words is "nineteen billion, two hundred eighty-two million, five hundred forty thousand, thirty-one".
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