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30224144021 = 57152931951
BaseRepresentation
bin11100001001011111…
…111101011010010101
32220000101001121011112
4130021133331122111
5443344340102041
621515040144405
72116660661651
oct341137753225
986011047145
1030224144021
11118aa817825
125a36008105
132b08953ab6
14166a113a61
15bbd651deb
hex7097fd695

30224144021 has 4 divisors (see below), whose sum is σ = 30277076544. Its totient is φ = 30171211500.

The previous prime is 30224144017. The next prime is 30224144023. The reversal of 30224144021 is 12044142203.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12044142203 = 13219117443.

It is a cyclic number.

It is not a de Polignac number, because 30224144021 - 22 = 30224144017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30224144023) 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, 26465405 + ... + 26466546.

It is an arithmetic number, because the mean of its divisors is an integer number (7569269136).

Almost surely, 230224144021 is an apocalyptic number.

It is an amenable number.

30224144021 is a deficient number, since it is larger than the sum of its proper divisors (52932523).

30224144021 is an equidigital number, since it uses as much as digits as its factorization.

30224144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52932522.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 30224144021 its reverse (12044142203), we get a palindrome (42268286224).

The spelling of 30224144021 in words is "thirty billion, two hundred twenty-four million, one hundred forty-four thousand, twenty-one".

Divisors: 1 571 52931951 30224144021