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212002013 = 934322691
BaseRepresentation
bin11001010001011…
…10010011011101
3112202220211002102
430220232103131
5413233031023
633011534445
75152662446
oct1450562335
9482824072
10212002013
11a9740283
125abba425
1334bca1a2
14202282cd
151392a628
hexca2e4dd

212002013 has 4 divisors (see below), whose sum is σ = 212034048. Its totient is φ = 211969980.

The previous prime is 212001983. The next prime is 212002027. The reversal of 212002013 is 310200212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212002013 - 26 = 212001949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212001985 and 212002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212002033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003 + ... + 20688.

It is an arithmetic number, because the mean of its divisors is an integer number (53008512).

Almost surely, 2212002013 is an apocalyptic number.

It is an amenable number.

212002013 is a deficient number, since it is larger than the sum of its proper divisors (32035).

212002013 is an equidigital number, since it uses as much as digits as its factorization.

212002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32034.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 212002013 is about 14560.2889051008. The cubic root of 212002013 is about 596.2750830293.

Adding to 212002013 its reverse (310200212), we get a palindrome (522202225).

The spelling of 212002013 in words is "two hundred twelve million, two thousand, thirteen".

Divisors: 1 9343 22691 212002013