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30221301131 = 74317328733
BaseRepresentation
bin11100001001010101…
…000111010110001011
32220000011201011110022
4130021111013112023
5443343123114011
621514455211055
72116624551440
oct341125072613
986004634408
1030221301131
11118a915592a
125a35076a8b
132b08199b08
1416699b39c7
15bbd28e8db
hex70954758b

30221301131 has 4 divisors (see below), whose sum is σ = 34538629872. Its totient is φ = 25903972392.

The previous prime is 30221301119. The next prime is 30221301139. The reversal of 30221301131 is 13110312203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13110312203 = 28614582423.

It is a cyclic number.

It is not a de Polignac number, because 30221301131 - 210 = 30221300107 is a prime.

It is a super-2 number, since 2×302213011312 (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 (30221301139) 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, 2158664360 + ... + 2158664373.

It is an arithmetic number, because the mean of its divisors is an integer number (8634657468).

Almost surely, 230221301131 is an apocalyptic number.

30221301131 is a deficient number, since it is larger than the sum of its proper divisors (4317328741).

30221301131 is an equidigital number, since it uses as much as digits as its factorization.

30221301131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317328740.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30221301131 its reverse (13110312203), we get a palindrome (43331613334).

The spelling of 30221301131 in words is "thirty billion, two hundred twenty-one million, three hundred one thousand, one hundred thirty-one".

Divisors: 1 7 4317328733 30221301131