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30312322223 = 144792093537
BaseRepresentation
bin11100001110110000…
…010101010010101111
32220020111222111220212
4130032300111102233
5444034423302343
621531510133035
72122111326161
oct341660252257
986214874825
1030312322223
1111945574377
125a5b65117b
132b20cb8751
141677b08931
15bc626dc18
hex70ec154af

30312322223 has 4 divisors (see below), whose sum is σ = 30314430240. Its totient is φ = 30310214208.

The previous prime is 30312322213. The next prime is 30312322231. The reversal of 30312322223 is 32222321303.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30312322223 - 220 = 30311273647 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 (30312322213) 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, 1032290 + ... + 1061247.

It is an arithmetic number, because the mean of its divisors is an integer number (7578607560).

Almost surely, 230312322223 is an apocalyptic number.

30312322223 is a deficient number, since it is larger than the sum of its proper divisors (2108017).

30312322223 is a wasteful number, since it uses less digits than its factorization.

30312322223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108016.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 30312322223 its reverse (32222321303), we get a palindrome (62534643526).

The spelling of 30312322223 in words is "thirty billion, three hundred twelve million, three hundred twenty-two thousand, two hundred twenty-three".

Divisors: 1 14479 2093537 30312322223