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211036109 = 239479689
BaseRepresentation
bin11001001010000…
…10011111001101
3112201002202010012
430211002133031
5413011123414
632535123005
75141530424
oct1445023715
9481082105
10211036109
11a9140609
125a813465
133494c64b
14200562bb
15137d933e
hexc9427cd

211036109 has 8 divisors (see below), whose sum is σ = 220466880. Its totient is φ = 201626656.

The previous prime is 211036087. The next prime is 211036121. The reversal of 211036109 is 901630112.

It is a happy number.

211036109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-211036109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211036139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16937 + ... + 26625.

It is an arithmetic number, because the mean of its divisors is an integer number (27558360).

Almost surely, 2211036109 is an apocalyptic number.

It is an amenable number.

211036109 is a deficient number, since it is larger than the sum of its proper divisors (9430771).

211036109 is an equidigital number, since it uses as much as digits as its factorization.

211036109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10659.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 211036109 is about 14527.0819162005. The cubic root of 211036109 is about 595.3681397591.

The spelling of 211036109 in words is "two hundred eleven million, thirty-six thousand, one hundred nine".

Divisors: 1 23 947 9689 21781 222847 9175483 211036109