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BaseRepresentation
bin110011100101111000
3101201212200
4303211320
523230240
64310200
71540044
oct634570
9351780
10211320
1113484a
12a2360
1375255
1457024
1542930
hex33978

211320 has 48 divisors (see below), whose sum is σ = 687960. Its totient is φ = 56256.

The previous prime is 211319. The next prime is 211333. The reversal of 211320 is 23112.

It is a happy number.

211320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2113202 = 89312284800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67 + ... + 653.

2211320 is an apocalyptic number.

211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343980).

211320 is an abundant number, since it is smaller than the sum of its proper divisors (476640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211320 is a wasteful number, since it uses less digits than its factorization.

211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 211320 is about 459.6955514251. The cubic root of 211320 is about 59.5634988126.

Adding to 211320 its reverse (23112), we get a palindrome (234432).

The spelling of 211320 in words is "two hundred eleven thousand, three hundred twenty", and thus it is an iban number.