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30231232223 = 23257147887
BaseRepresentation
bin11100001001111010…
…111111111011011111
32220000212101201100112
4130021322333323133
5443403143412343
621515452120235
72120105143163
oct341172777337
986025351315
1030231232223
1111903819245
125a3846607b
132b0a2661ba
14166b03aca3
15bbe0a2218
hex709ebfedf

30231232223 has 6 divisors (see below), whose sum is σ = 31602782064. Its totient is φ = 28916830316.

The previous prime is 30231232217. The next prime is 30231232279. The reversal of 30231232223 is 32223213203.

It is not a de Polignac number, because 30231232223 - 26 = 30231232159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231232523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28573415 + ... + 28574472.

It is an arithmetic number, because the mean of its divisors is an integer number (5267130344).

Almost surely, 230231232223 is an apocalyptic number.

30231232223 is a deficient number, since it is larger than the sum of its proper divisors (1371549841).

30231232223 is an equidigital number, since it uses as much as digits as its factorization.

30231232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57147933 (or 57147910 counting only the distinct ones).

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

Adding to 30231232223 its reverse (32223213203), we get a palindrome (62454445426).

The spelling of 30231232223 in words is "thirty billion, two hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-three".

Divisors: 1 23 529 57147887 1314401401 30231232223