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212012110331 = 7714211013263
BaseRepresentation
bin1100010101110011101…
…0000001000111111011
3202021020111012010002122
43011130322001013323
511433200100012311
6241221431151455
721213600126560
oct3053472010773
9667214163078
10212012110331
1181a0634450a
123510a51558b
1316cb9b33c78
14a393572867
1557accd80db
hex315ce811fb

212012110331 has 16 divisors (see below), whose sum is σ = 246296107008. Its totient is φ = 178739416800.

The previous prime is 212012110301. The next prime is 212012110351. The reversal of 212012110331 is 133011210212.

It is not a de Polignac number, because 212012110331 - 226 = 211945001467 is a prime.

It is a super-2 number, since 2×2120121103312 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212012110301) 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, 297395 + ... + 715868.

It is an arithmetic number, because the mean of its divisors is an integer number (15393506688).

Almost surely, 2212012110331 is an apocalyptic number.

212012110331 is a deficient number, since it is larger than the sum of its proper divisors (34283996677).

212012110331 is a wasteful number, since it uses less digits than its factorization.

212012110331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013762.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212012110331 its reverse (133011210212), we get a palindrome (345023320543).

The spelling of 212012110331 in words is "two hundred twelve billion, twelve million, one hundred ten thousand, three hundred thirty-one".

Divisors: 1 7 71 421 497 2947 29891 209237 1013263 7092841 71941673 426583723 503591711 2986086061 30287444333 212012110331