Search a number
-
+
230131286745449 is a prime number
BaseRepresentation
bin110100010100110110011101…
…100110010010000101101001
31010011211100002001111111121012
4310110312131212102011221
5220130432333401323244
62133240504215153305
766321302550645605
oct6424663546220551
91104740061444535
10230131286745449
1167366148948421
1221988b9a375835
139b5439704989b
1440b85b130a505
151b91399b4e89e
hexd14d9d992169

230131286745449 has 2 divisors, whose sum is σ = 230131286745450. Its totient is φ = 230131286745448.

The previous prime is 230131286745443. The next prime is 230131286745491. The reversal of 230131286745449 is 944547682131032.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228686013927424 + 1445272818025 = 15122368^2 + 1202195^2 .

It is a cyclic number.

It is not a de Polignac number, because 230131286745449 - 24 = 230131286745433 is a prime.

It is not a weakly prime, because it can be changed into another prime (230131286745443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115065643372724 + 115065643372725.

It is an arithmetic number, because the mean of its divisors is an integer number (115065643372725).

It is a 1-persistent number, because it is pandigital, but 2⋅230131286745449 = 460262573490898 is not.

Almost surely, 2230131286745449 is an apocalyptic number.

It is an amenable number.

230131286745449 is a deficient number, since it is larger than the sum of its proper divisors (1).

230131286745449 is an equidigital number, since it uses as much as digits as its factorization.

230131286745449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 59.

The spelling of 230131286745449 in words is "two hundred thirty trillion, one hundred thirty-one billion, two hundred eighty-six million, seven hundred forty-five thousand, four hundred forty-nine".