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12033202431 = 343271344209
BaseRepresentation
bin10110011010011110…
…00001100011111111
31011001121121000112010
423031033001203333
5144120444434211
65310013142303
7604123350555
oct131517014377
934047530463
1012033202431
11511547a0a8
1223b9a8a993
131199cbb333
148221c1bd5
154a662d4a6
hex2cd3c18ff

12033202431 has 16 divisors (see below), whose sum is σ = 16478021120. Its totient is φ = 7806637440.

The previous prime is 12033202411. The next prime is 12033202439. The reversal of 12033202431 is 13420233021.

It is not a de Polignac number, because 12033202431 - 218 = 12032940287 is a prime.

It is a super-2 number, since 2×120332024312 (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 = 12033202398 and 12033202407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12033202439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137146 + ... + 207063.

It is an arithmetic number, because the mean of its divisors is an integer number (1029876320).

Almost surely, 212033202431 is an apocalyptic number.

12033202431 is a deficient number, since it is larger than the sum of its proper divisors (4444818689).

12033202431 is a wasteful number, since it uses less digits than its factorization.

12033202431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344526.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12033202431 its reverse (13420233021), we get a palindrome (25453435452).

The spelling of 12033202431 in words is "twelve billion, thirty-three million, two hundred two thousand, four hundred thirty-one".

Divisors: 1 3 43 129 271 813 11653 34959 344209 1032627 14800987 44402961 93280639 279841917 4011067477 12033202431