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30243231223 = 50515987573
BaseRepresentation
bin11100001010101000…
…110001010111110111
32220001200222022212221
4130022220301113313
5443414231344343
621521001223211
72120312136532
oct341250612767
986050868787
1030243231223
111190a574277
125a40491b07
132b0c8a78ba
14166c881a19
15bc01725ed
hex70aa315f7

30243231223 has 4 divisors (see below), whose sum is σ = 30249223848. Its totient is φ = 30237238600.

The previous prime is 30243231197. The next prime is 30243231257. The reversal of 30243231223 is 32213234203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32213234203 = 126012556403.

It is a cyclic number.

It is not a de Polignac number, because 30243231223 - 25 = 30243231191 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 (30243232223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2988736 + ... + 2998837.

It is an arithmetic number, because the mean of its divisors is an integer number (7562305962).

Almost surely, 230243231223 is an apocalyptic number.

30243231223 is a deficient number, since it is larger than the sum of its proper divisors (5992625).

30243231223 is an equidigital number, since it uses as much as digits as its factorization.

30243231223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992624.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 30243231223 its reverse (32213234203), we get a palindrome (62456465426).

The spelling of 30243231223 in words is "thirty billion, two hundred forty-three million, two hundred thirty-one thousand, two hundred twenty-three".

Divisors: 1 5051 5987573 30243231223