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30213212243 = 1721273672243
BaseRepresentation
bin11100001000110110…
…010000100001010011
32212222121111012120212
4130020312100201103
5443334040242433
621514005554335
72116466031614
oct341066204123
985877435525
1030213212243
11118a46305a5
125a324159ab
132b065c70a6
1416688a9c0b
15bbc6e2d48
hex708d90853

30213212243 has 24 divisors (see below), whose sum is σ = 32450322432. Its totient is φ = 28122643584.

The previous prime is 30213212233. The next prime is 30213212261. The reversal of 30213212243 is 34221231203.

It is not a de Polignac number, because 30213212243 - 218 = 30212950099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30213212203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13468880 + ... + 13471122.

It is an arithmetic number, because the mean of its divisors is an integer number (1352096768).

Almost surely, 230213212243 is an apocalyptic number.

30213212243 is a deficient number, since it is larger than the sum of its proper divisors (2237110189).

30213212243 is a wasteful number, since it uses less digits than its factorization.

30213212243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2754 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30213212243 its reverse (34221231203), we get a palindrome (64434443446).

The spelling of 30213212243 in words is "thirty billion, two hundred thirteen million, two hundred twelve thousand, two hundred forty-three".

Divisors: 1 17 127 289 367 2159 2243 6239 36703 38131 46609 106063 284861 648227 792353 823181 4842637 13470001 13994077 82324829 104543987 237899309 1777247779 30213212243