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115320213 = 33107179223
BaseRepresentation
bin1101101111110…
…10010110010101
322000222212121000
412313322112111
5214010221323
615235413513
72600130351
oct667722625
9260885530
10115320213
115a105868
1232754299
131ab78b18
141145c461
15a1cde43
hex6dfa595

115320213 has 32 divisors (see below), whose sum is σ = 174182400. Its totient is φ = 75396528.

The previous prime is 115320169. The next prime is 115320239. The reversal of 115320213 is 312023511.

It is not a de Polignac number, because 115320213 - 214 = 115303829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115320263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517020 + ... + 517242.

It is an arithmetic number, because the mean of its divisors is an integer number (5443200).

Almost surely, 2115320213 is an apocalyptic number.

It is an amenable number.

115320213 is a deficient number, since it is larger than the sum of its proper divisors (58862187).

115320213 is a wasteful number, since it uses less digits than its factorization.

115320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 115320213 is about 10738.7249243101. The cubic root of 115320213 is about 486.7453507501.

Adding to 115320213 its reverse (312023511), we get a palindrome (427343724).

The spelling of 115320213 in words is "one hundred fifteen million, three hundred twenty thousand, two hundred thirteen".

Divisors: 1 3 9 27 107 179 223 321 537 669 963 1611 2007 2889 4833 6021 19153 23861 39917 57459 71583 119751 172377 214749 359253 517131 644247 1077759 4271119 12813357 38440071 115320213