Search a number
-
+
30102320011 = 31971042581
BaseRepresentation
bin11100000010001111…
…001111001110001011
32212200212211022001011
4130002033033032023
5443122143220021
621455005104351
72113651332631
oct340217171613
985625738034
1030102320011
1111847a7a625
125a012580b7
132ab963b89a
141657c81351
15bb2adade1
hex7023cf38b

30102320011 has 4 divisors (see below), whose sum is σ = 31073362624. Its totient is φ = 29131277400.

The previous prime is 30102319999. The next prime is 30102320033. The reversal of 30102320011 is 11002320103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30102320011 - 211 = 30102317963 is a prime.

It is a super-2 number, since 2×301023200112 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30102319973 and 30102320000.

It is not an unprimeable number, because it can be changed into a prime (30102320041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485521260 + ... + 485521321.

It is an arithmetic number, because the mean of its divisors is an integer number (7768340656).

Almost surely, 230102320011 is an apocalyptic number.

30102320011 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30102320011 is a deficient number, since it is larger than the sum of its proper divisors (971042613).

30102320011 is an equidigital number, since it uses as much as digits as its factorization.

30102320011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971042612.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30102320011 its reverse (11002320103), we get a palindrome (41104640114).

The spelling of 30102320011 in words is "thirty billion, one hundred two million, three hundred twenty thousand, eleven".

Divisors: 1 31 971042581 30102320011