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212512337 is a prime number
BaseRepresentation
bin11001010101010…
…10111001010001
3112210212202010022
430222222321101
5413400343322
633030513225
75160216332
oct1452527121
9483782108
10212512337
11a9a59734
125b205815
133504855b
142031c289
15139cb942
hexcaaae51

212512337 has 2 divisors, whose sum is σ = 212512338. Its totient is φ = 212512336.

The previous prime is 212512303. The next prime is 212512357. The reversal of 212512337 is 733215212.

212512337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140754496 + 71757841 = 11864^2 + 8471^2 .

It is a cyclic number.

It is not a de Polignac number, because 212512337 - 26 = 212512273 is a prime.

It is a super-2 number, since 2×2125123372 = 90322986754403138, which contains 22 as substring.

It is a Chen prime.

It is equal to p11732561 and since 212512337 and 11732561 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (212512357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106256168 + 106256169.

It is an arithmetic number, because the mean of its divisors is an integer number (106256169).

Almost surely, 2212512337 is an apocalyptic number.

It is an amenable number.

212512337 is a deficient number, since it is larger than the sum of its proper divisors (1).

212512337 is an equidigital number, since it uses as much as digits as its factorization.

212512337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 212512337 is about 14577.8028865807. The cubic root of 212512337 is about 596.7531439772.

Adding to 212512337 its reverse (733215212), we get a palindrome (945727549).

The spelling of 212512337 in words is "two hundred twelve million, five hundred twelve thousand, three hundred thirty-seven".