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230022281 is a prime number
BaseRepresentation
bin11011011010111…
…01110010001001
3121000211100020202
431231131302021
5432341203111
634454101545
75462104616
oct1555356211
9530740222
10230022281
11108929165
126504a8b5
1338869478
142279950d
15152d9b3b
hexdb5dc89

230022281 has 2 divisors, whose sum is σ = 230022282. Its totient is φ = 230022280.

The previous prime is 230022269. The next prime is 230022311. The reversal of 230022281 is 182220032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135932281 + 94090000 = 11659^2 + 9700^2 .

It is a cyclic number.

It is not a de Polignac number, because 230022281 - 26 = 230022217 is a prime.

It is a super-2 number, since 2×2300222812 = 105820499512885922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230022581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115011140 + 115011141.

It is an arithmetic number, because the mean of its divisors is an integer number (115011141).

Almost surely, 2230022281 is an apocalyptic number.

It is an amenable number.

230022281 is a deficient number, since it is larger than the sum of its proper divisors (1).

230022281 is an equidigital number, since it uses as much as digits as its factorization.

230022281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 230022281 is about 15166.4854531299. The cubic root of 230022281 is about 612.7123515262.

The spelling of 230022281 in words is "two hundred thirty million, twenty-two thousand, two hundred eighty-one".