Base | Representation |
---|---|
bin | 100100011100101… |
… | …1101100110011001 |
3 | 10011020100000011012 |
4 | 1020321131212121 |
5 | 10001043214001 |
6 | 321205343305 |
7 | 42210344504 |
oct | 11071354631 |
9 | 3136300135 |
10 | 1223023001 |
11 | 578401312 |
12 | 2a1707b35 |
13 | 1664c5865 |
14 | b860413b |
15 | 725872bb |
hex | 48e5d999 |
1223023001 has 4 divisors (see below), whose sum is σ = 1224145104. Its totient is φ = 1221900900.
The previous prime is 1223022967. The next prime is 1223023007. The reversal of 1223023001 is 1003203221.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1003203221 = 911 ⋅1101211.
It is a cyclic number.
It is not a de Polignac number, because 1223023001 - 222 = 1218828697 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1223023007) 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, 559415 + ... + 561596.
It is an arithmetic number, because the mean of its divisors is an integer number (306036276).
Almost surely, 21223023001 is an apocalyptic number.
It is an amenable number.
1223023001 is a deficient number, since it is larger than the sum of its proper divisors (1122103).
1223023001 is a wasteful number, since it uses less digits than its factorization.
1223023001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1122102.
The product of its (nonzero) digits is 72, while the sum is 14.
The square root of 1223023001 is about 34971.7457528217. The cubic root of 1223023001 is about 1069.4115613326.
Adding to 1223023001 its reverse (1003203221), we get a palindrome (2226226222).
The spelling of 1223023001 in words is "one billion, two hundred twenty-three million, twenty-three thousand, one".
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