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13312012233 = 3131873182239
BaseRepresentation
bin11000110010111010…
…10010111111001001
31021100201220021210010
430121131102333021
5204230333342413
610040534342133
7650612144202
oct143135227711
937321807703
1013312012233
115711313903
1226b61ba949
131341c17220
14903d885a9
1552da34dc3
hex319752fc9

13312012233 has 16 divisors (see below), whose sum is σ = 19124994560. Its totient is φ = 8187588864.

The previous prime is 13312012223. The next prime is 13312012247. The reversal of 13312012233 is 33221021331.

It is not a de Polignac number, because 13312012233 - 220 = 13310963657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13312012213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18073 + ... + 164166.

It is an arithmetic number, because the mean of its divisors is an integer number (1195312160).

Almost surely, 213312012233 is an apocalyptic number.

13312012233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13312012233 is a deficient number, since it is larger than the sum of its proper divisors (5812982327).

13312012233 is a wasteful number, since it uses less digits than its factorization.

13312012233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184128.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13312012233 its reverse (33221021331), we get a palindrome (46533033564).

The spelling of 13312012233 in words is "thirteen billion, three hundred twelve million, twelve thousand, two hundred thirty-three".

Divisors: 1 3 13 39 1873 5619 24349 73047 182239 546717 2369107 7107321 341333647 1024000941 4437337411 13312012233