Base | Representation |
---|---|
bin | 11011011011100… |
… | …10111000111011 |
3 | 121000222201211121 |
4 | 31231302320323 |
5 | 432401434411 |
6 | 34500010111 |
7 | 5462614636 |
oct | 1555627073 |
9 | 530881747 |
10 | 230108731 |
11 | 108988106 |
12 | 65090937 |
13 | 38899918 |
14 | 227bcc1d |
15 | 15305571 |
hex | db72e3b |
230108731 has 2 divisors, whose sum is σ = 230108732. Its totient is φ = 230108730.
The previous prime is 230108729. The next prime is 230108737. The reversal of 230108731 is 137801032.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 230108731 - 21 = 230108729 is a prime.
It is a super-2 number, since 2×2301087312 = 105900056164860722, which contains 22 as substring.
Together with 230108729, it forms a pair of twin primes.
It is a junction number, because it is equal to n+sod(n) for n = 230108696 and 230108705.
It is not a weakly prime, because it can be changed into another prime (230108737) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115054365 + 115054366.
It is an arithmetic number, because the mean of its divisors is an integer number (115054366).
Almost surely, 2230108731 is an apocalyptic number.
230108731 is a deficient number, since it is larger than the sum of its proper divisors (1).
230108731 is an equidigital number, since it uses as much as digits as its factorization.
230108731 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1008, while the sum is 25.
The square root of 230108731 is about 15169.3352194485. The cubic root of 230108731 is about 612.7891011177.
Adding to 230108731 its reverse (137801032), we get a palindrome (367909763).
The spelling of 230108731 in words is "two hundred thirty million, one hundred eight thousand, seven hundred thirty-one".
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