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30020344423 = 59508819397
BaseRepresentation
bin11011111101010110…
…100001101001100111
32212111011120111200021
4123331112201221213
5442440202010143
621442520100011
72111634501016
oct337526415147
985434514607
1030020344423
111180577a103
125999904607
132aa5669214
14164b022a7d
15baa7e6ced
hex6fd5a1a67

30020344423 has 4 divisors (see below), whose sum is σ = 30529163880. Its totient is φ = 29511524968.

The previous prime is 30020344411. The next prime is 30020344427. The reversal of 30020344423 is 32444302003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32444302003 = 294831100441.

It is a cyclic number.

It is not a de Polignac number, because 30020344423 - 25 = 30020344391 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 (30020344427) 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, 254409640 + ... + 254409757.

It is an arithmetic number, because the mean of its divisors is an integer number (7632290970).

Almost surely, 230020344423 is an apocalyptic number.

30020344423 is a deficient number, since it is larger than the sum of its proper divisors (508819457).

30020344423 is an equidigital number, since it uses as much as digits as its factorization.

30020344423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508819456.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 30020344423 its reverse (32444302003), we get a palindrome (62464646426).

The spelling of 30020344423 in words is "thirty billion, twenty million, three hundred forty-four thousand, four hundred twenty-three".

Divisors: 1 59 508819397 30020344423