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212023 = 724327
BaseRepresentation
bin110011110000110111
3101202211201
4303300313
523241043
64313331
71542100
oct636067
9352751
10212023
11135329
12a2847
1375676
14573a7
1542c4d
hex33c37

212023 has 6 divisors (see below), whose sum is σ = 246696. Its totient is φ = 181692.

The previous prime is 211997. The next prime is 212029. The reversal of 212023 is 320212.

It is a de Polignac number, because none of the positive numbers 2k-212023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2115 + ... + 2212.

It is an arithmetic number, because the mean of its divisors is an integer number (41116).

2212023 is an apocalyptic number.

212023 is a deficient number, since it is larger than the sum of its proper divisors (34673).

212023 is an equidigital number, since it uses as much as digits as its factorization.

212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341 (or 4334 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 212023 is about 460.4595530554. The cubic root of 212023 is about 59.6294758333.

Adding to 212023 its reverse (320212), we get a palindrome (532235).

The spelling of 212023 in words is "two hundred twelve thousand, twenty-three", and thus it is an iban number.

Divisors: 1 7 49 4327 30289 212023