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2133230231 = 11538941113
BaseRepresentation
bin111111100100110…
…1000001010010111
312111200001022202002
41333021220022113
513332101331411
6551402305515
7103602105056
oct17711501227
95450038662
102133230231
119a51754a0
124b64b829b
1327cc54212
1416345a39d
15c742d33b
hex7f268297

2133230231 has 16 divisors (see below), whose sum is σ = 2397768480. Its totient is φ = 1881285120.

The previous prime is 2133230213. The next prime is 2133230237. The reversal of 2133230231 is 1320323312.

It is not a de Polignac number, because 2133230231 - 26 = 2133230167 is a prime.

It is a super-2 number, since 2×21332302312 = 9101342436904626722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133230237) 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 15 ways as a sum of consecutive naturals, for example, 31331 + ... + 72443.

It is an arithmetic number, because the mean of its divisors is an integer number (149860530).

Almost surely, 22133230231 is an apocalyptic number.

2133230231 is a deficient number, since it is larger than the sum of its proper divisors (264538249).

2133230231 is a wasteful number, since it uses less digits than its factorization.

2133230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41266.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2133230231 is about 46186.9054061863. The cubic root of 2133230231 is about 1287.2984407633.

Adding to 2133230231 its reverse (1320323312), we get a palindrome (3453553543).

The spelling of 2133230231 in words is "two billion, one hundred thirty-three million, two hundred thirty thousand, two hundred thirty-one".

Divisors: 1 11 53 89 583 979 4717 41113 51887 452243 2178989 3659057 23968879 40249627 193930021 2133230231