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30102303211 = 59510208529
BaseRepresentation
bin11100000010001111…
…001011000111101011
32212200212210102222221
4130002033023013223
5443122142200321
621455004454511
72113651232641
oct340217130753
985625712887
1030102303211
1111847a68a42
125a0124a437
132ab9634046
141657c79191
15bb2ad5e41
hex7023cb1eb

30102303211 has 4 divisors (see below), whose sum is σ = 30612511800. Its totient is φ = 29592094624.

The previous prime is 30102303139. The next prime is 30102303221. The reversal of 30102303211 is 11230320103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11230320103 = 82713579589.

It is a cyclic number.

It is not a de Polignac number, because 30102303211 - 213 = 30102295019 is a prime.

It is a super-2 number, since 2×301023032112 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30102303221) 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, 255104206 + ... + 255104323.

It is an arithmetic number, because the mean of its divisors is an integer number (7653127950).

Almost surely, 230102303211 is an apocalyptic number.

30102303211 is a deficient number, since it is larger than the sum of its proper divisors (510208589).

30102303211 is an equidigital number, since it uses as much as digits as its factorization.

30102303211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510208588.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30102303211 its reverse (11230320103), we get a palindrome (41332623314).

The spelling of 30102303211 in words is "thirty billion, one hundred two million, three hundred three thousand, two hundred eleven".

Divisors: 1 59 510208529 30102303211