Base | Representation |
---|---|
bin | 10101011011101011… |
… | …101111110100111110 |
3 | 2012101211002010002000 |
4 | 111123223233310332 |
5 | 334112313444410 |
6 | 14323321043130 |
7 | 1443166352340 |
oct | 253353576476 |
9 | 65354063060 |
10 | 23013031230 |
11 | 983a28aa82 |
12 | 45630264a6 |
13 | 22299a2657 |
14 | 1184521290 |
15 | 8ea535dc0 |
hex | 55baefd3e |
23013031230 has 128 divisors (see below), whose sum is σ = 73826380800. Its totient is φ = 4983265152.
The previous prime is 23013031213. The next prime is 23013031231. The reversal of 23013031230 is 3213031032.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23013031231) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 284517 + ... + 356336.
It is an arithmetic number, because the mean of its divisors is an integer number (576768600).
Almost surely, 223013031230 is an apocalyptic number.
23013031230 is an abundant number, since it is smaller than the sum of its proper divisors (50813349570).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23013031230 is a wasteful number, since it uses less digits than its factorization.
23013031230 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 640895 (or 640889 counting only the distinct ones).
The product of its (nonzero) digits is 324, while the sum is 18.
Adding to 23013031230 its reverse (3213031032), we get a palindrome (26226062262).
The spelling of 23013031230 in words is "twenty-three billion, thirteen million, thirty-one thousand, two hundred thirty".
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