Base | Representation |
---|---|
bin | 101011111011… |
… | …0111001110111 |
3 | 1121100010011101 |
4 | 1113312321313 |
5 | 21344001130 |
6 | 2141350531 |
7 | 366522661 |
oct | 127667167 |
9 | 47303141 |
10 | 23031415 |
11 | 12000930 |
12 | 7868447 |
13 | 4a05174 |
14 | 30b7531 |
15 | 204e1ca |
hex | 15f6e77 |
23031415 has 16 divisors (see below), whose sum is σ = 30722976. Its totient is φ = 16432000.
The previous prime is 23031409. The next prime is 23031461. The reversal of 23031415 is 51413032.
It is not a de Polignac number, because 23031415 - 25 = 23031383 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 23031392 and 23031401.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036 + ... + 6865.
It is an arithmetic number, because the mean of its divisors is an integer number (1920186).
Almost surely, 223031415 is an apocalyptic number.
23031415 is a deficient number, since it is larger than the sum of its proper divisors (7691561).
23031415 is a wasteful number, since it uses less digits than its factorization.
23031415 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7970.
The product of its (nonzero) digits is 360, while the sum is 19.
The square root of 23031415 is about 4799.1056458469. The cubic root of 23031415 is about 284.5161174582.
Adding to 23031415 its reverse (51413032), we get a palindrome (74444447).
The spelling of 23031415 in words is "twenty-three million, thirty-one thousand, four hundred fifteen".
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