Search a number
-
+
30012108481 is a prime number
BaseRepresentation
bin11011111100110111…
…000110111011000001
32212110121002002002101
4123330313012323001
5442431044432411
621442023350401
72111504466355
oct337467067301
985417062071
1030012108481
1111801064343
125996bb2401
132aa3a44594
141649cbb465
15ba9c1b8c1
hex6fcdc6ec1

30012108481 has 2 divisors, whose sum is σ = 30012108482. Its totient is φ = 30012108480.

The previous prime is 30012108443. The next prime is 30012108517. The reversal of 30012108481 is 18480121003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18459298225 + 11552810256 = 135865^2 + 107484^2 .

It is a cyclic number.

It is not a de Polignac number, because 30012108481 - 29 = 30012107969 is a prime.

It is a super-2 number, since 2×300121084812 (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30012108781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006054240 + 15006054241.

It is an arithmetic number, because the mean of its divisors is an integer number (15006054241).

Almost surely, 230012108481 is an apocalyptic number.

It is an amenable number.

30012108481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30012108481 is an equidigital number, since it uses as much as digits as its factorization.

30012108481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

Adding to 30012108481 its reverse (18480121003), we get a palindrome (48492229484).

The spelling of 30012108481 in words is "thirty billion, twelve million, one hundred eight thousand, four hundred eighty-one".