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12302203231 = 191627110271
BaseRepresentation
bin10110111010100010…
…01011100101011111
31011202100202200020201
423131101023211133
5200143331000411
65352422524331
7613601000503
oct133521134537
934670680221
1012302203231
11524330040a
122473b966a7
1312109543c6
14849c06303
154c00673c1
hex2dd44b95f

12302203231 has 8 divisors (see below), whose sum is σ = 12369788928. Its totient is φ = 12234651000.

The previous prime is 12302203229. The next prime is 12302203237. The reversal of 12302203231 is 13230220321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12302203231 - 21 = 12302203229 is a prime.

It is a super-2 number, since 2×123022032312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12302203199 and 12302203208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302203237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192626 + ... + 1202896.

It is an arithmetic number, because the mean of its divisors is an integer number (1546223616).

Almost surely, 212302203231 is an apocalyptic number.

12302203231 is a deficient number, since it is larger than the sum of its proper divisors (67585697).

12302203231 is a wasteful number, since it uses less digits than its factorization.

12302203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16733.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12302203231 its reverse (13230220321), we get a palindrome (25532423552).

The spelling of 12302203231 in words is "twelve billion, three hundred two million, two hundred three thousand, two hundred thirty-one".

Divisors: 1 191 6271 10271 1197761 1961761 64409441 12302203231