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30022304321 = 97730729073
BaseRepresentation
bin11011111101011110…
…000000001001000001
32212111022021002011002
4123331132000021001
5442441202214241
621443030101345
72111660243012
oct337536001101
985438232132
1030022304321
1111806898659
12599a4aa855
132aa5ba4319
14164b3b3009
15baaa8289b
hex6fd780241

30022304321 has 4 divisors (see below), whose sum is σ = 30053034372. Its totient is φ = 29991574272.

The previous prime is 30022304309. The next prime is 30022304327. The reversal of 30022304321 is 12340322003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12340322003 = 61320131031.

It can be written as a sum of positive squares in 2 ways, for example, as 27969217600 + 2053086721 = 167240^2 + 45311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30022304321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30022304293 and 30022304302.

It is not an unprimeable number, because it can be changed into a prime (30022304327) 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, 15363560 + ... + 15365513.

It is an arithmetic number, because the mean of its divisors is an integer number (7513258593).

Almost surely, 230022304321 is an apocalyptic number.

It is an amenable number.

30022304321 is a deficient number, since it is larger than the sum of its proper divisors (30730051).

30022304321 is an equidigital number, since it uses as much as digits as its factorization.

30022304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30730050.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 30022304321 its reverse (12340322003), we get a palindrome (42362626324).

The spelling of 30022304321 in words is "thirty billion, twenty-two million, three hundred four thousand, three hundred twenty-one".

Divisors: 1 977 30729073 30022304321