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231105055 = 5172718883
BaseRepresentation
bin11011100011001…
…10001000011111
3121002212100112111
431301212020133
5433130330210
634533214451
75504234446
oct1561461037
9532770474
10231105055
111094a8715
1265491427
1338b5826c
142299bd5d
151545088a
hexdc6621f

231105055 has 8 divisors (see below), whose sum is σ = 293639472. Its totient is φ = 174008448.

The previous prime is 231105029. The next prime is 231105059. The reversal of 231105055 is 550501132.

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

It is a cyclic number.

It is not a de Polignac number, because 231105055 - 215 = 231072287 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 (231105059) 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, 1359357 + ... + 1359526.

It is an arithmetic number, because the mean of its divisors is an integer number (36704934).

Almost surely, 2231105055 is an apocalyptic number.

231105055 is a deficient number, since it is larger than the sum of its proper divisors (62534417).

231105055 is a wasteful number, since it uses less digits than its factorization.

231105055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718905.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 231105055 is about 15202.1398164864. The cubic root of 231105055 is about 613.6722451180.

Adding to 231105055 its reverse (550501132), we get a palindrome (781606187).

The spelling of 231105055 in words is "two hundred thirty-one million, one hundred five thousand, fifty-five".

Divisors: 1 5 17 85 2718883 13594415 46221011 231105055