Base | Representation |
---|---|
bin | 101011000000100… |
… | …1010000101011111 |
3 | 10201120112022102221 |
4 | 1112001022011133 |
5 | 10423421102111 |
6 | 355111330211 |
7 | 50522344000 |
oct | 12601120537 |
9 | 3646468387 |
10 | 1443144031 |
11 | 68068751a |
12 | 343380967 |
13 | 19cca63a4 |
14 | d99431a7 |
15 | 86a68371 |
hex | 5604a15f |
1443144031 has 32 divisors (see below), whose sum is σ = 1781120000. Its totient is φ = 1165552416.
The previous prime is 1443144019. The next prime is 1443144047. The reversal of 1443144031 is 1304413441.
It is not a de Polignac number, because 1443144031 - 27 = 1443143903 is a prime.
It is a super-2 number, since 2×14431440312 = 4165329388421857922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1443143987 and 1443144005.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1443144061) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1491910 + ... + 1492876.
It is an arithmetic number, because the mean of its divisors is an integer number (55660000).
Almost surely, 21443144031 is an apocalyptic number.
1443144031 is a deficient number, since it is larger than the sum of its proper divisors (337975969).
1443144031 is an equidigital number, since it uses as much as digits as its factorization.
1443144031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1236 (or 1222 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 25.
The square root of 1443144031 is about 37988.7355804323. The cubic root of 1443144031 is about 1130.0644834896.
Adding to 1443144031 its reverse (1304413441), we get a palindrome (2747557472).
The spelling of 1443144031 in words is "one billion, four hundred forty-three million, one hundred forty-four thousand, thirty-one".
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