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230431519 is a prime number
BaseRepresentation
bin11011011110000…
…01101100011111
3121001121010121201
431233001230133
5432442302034
634510540331
75465431003
oct1557015437
9531533551
10230431519
1110908867a
12652076a7
1338980816
1422864703
151536b014
hexdbc1b1f

230431519 has 2 divisors, whose sum is σ = 230431520. Its totient is φ = 230431518.

The previous prime is 230431517. The next prime is 230431547. The reversal of 230431519 is 915134032.

It is an a-pointer prime, because the next prime (230431547) can be obtained adding 230431519 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230431519 - 21 = 230431517 is a prime.

It is a super-2 number, since 2×2304315192 = 106197369897294722, which contains 22 as substring.

Together with 230431517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230431511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115215759 + 115215760.

It is an arithmetic number, because the mean of its divisors is an integer number (115215760).

Almost surely, 2230431519 is an apocalyptic number.

230431519 is a deficient number, since it is larger than the sum of its proper divisors (1).

230431519 is an equidigital number, since it uses as much as digits as its factorization.

230431519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 230431519 is about 15179.9709815269. The cubic root of 230431519 is about 613.0754998566.

The spelling of 230431519 in words is "two hundred thirty million, four hundred thirty-one thousand, five hundred nineteen".