Search a number
-
+
230187127081 = 379916058991
BaseRepresentation
bin1101011001100000111…
…0001101000100101001
3211000011010200121222011
43112120032031010221
512232410401031311
6253425124555521
722426152203602
oct3263016150451
9730133617864
10230187127081
11896926a560a
1238741252ba1
13189253b2152
14b1d931ada9
155ec3713321
hex359838d129

230187127081 has 4 divisors (see below), whose sum is σ = 230193224064. Its totient is φ = 230181030100.

The previous prime is 230187127061. The next prime is 230187127111. The reversal of 230187127081 is 180721781032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230187127081 - 227 = 230052909353 is a prime.

It is a super-2 number, since 2×2301871270812 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230187127061) 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 in 3 ways as a sum of consecutive naturals, for example, 2991505 + ... + 3067486.

It is an arithmetic number, because the mean of its divisors is an integer number (57548306016).

Almost surely, 2230187127081 is an apocalyptic number.

It is an amenable number.

230187127081 is a deficient number, since it is larger than the sum of its proper divisors (6096983).

230187127081 is an equidigital number, since it uses as much as digits as its factorization.

230187127081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096982.

The product of its (nonzero) digits is 37632, while the sum is 40.

The spelling of 230187127081 in words is "two hundred thirty billion, one hundred eighty-seven million, one hundred twenty-seven thousand, eighty-one".

Divisors: 1 37991 6058991 230187127081