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230431169 is a prime number
BaseRepresentation
bin11011011110000…
…01100111000001
3121001121010010202
431233001213001
5432442244134
634510534545
75465426663
oct1557014701
9531533122
10230431169
11109088391
1265207455
1338980607
1422864533
151536ad7e
hexdbc19c1

230431169 has 2 divisors, whose sum is σ = 230431170. Its totient is φ = 230431168.

The previous prime is 230431081. The next prime is 230431171. The reversal of 230431169 is 961134032.

230431169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230280625 + 150544 = 15175^2 + 388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230431169 is a prime.

It is a super-2 number, since 2×2304311692 = 106197047293413122, which contains 22 as substring.

Together with 230431171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230431199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115215584 + 115215585.

It is an arithmetic number, because the mean of its divisors is an integer number (115215585).

Almost surely, 2230431169 is an apocalyptic number.

It is an amenable number.

230431169 is a deficient number, since it is larger than the sum of its proper divisors (1).

230431169 is an equidigital number, since it uses as much as digits as its factorization.

230431169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 230431169 is about 15179.9594531738. The cubic root of 230431169 is about 613.0751894585.

The spelling of 230431169 in words is "two hundred thirty million, four hundred thirty-one thousand, one hundred sixty-nine".