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231220033232223 = 3766754916493887
BaseRepresentation
bin110100100100101100011011…
…111100100001110101011111
31010022200102022200002120022210
4310210230123330201311133
5220301302112001412343
62135433003351011503
766463044654253650
oct6444543374416537
91108612280076283
10231220033232223
1167745957958362
1221b23ba9369b93
139c02c56527999
144115175d91527
151bae86c686333
hexd24b1bf21d5f

231220033232223 has 16 divisors (see below), whose sum is σ = 352335837900800. Its totient is φ = 132125527338336.

The previous prime is 231220033232147. The next prime is 231220033232269. The reversal of 231220033232223 is 322232330022132.

It is not a de Polignac number, because 231220033232223 - 29 = 231220033231711 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 (231220033242223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5771586 + ... + 22265472.

It is an arithmetic number, because the mean of its divisors is an integer number (22020989868800).

Almost surely, 2231220033232223 is an apocalyptic number.

231220033232223 is a deficient number, since it is larger than the sum of its proper divisors (121115804668577).

231220033232223 is a wasteful number, since it uses less digits than its factorization.

231220033232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17161446.

The product of its (nonzero) digits is 31104, while the sum is 30.

Adding to 231220033232223 its reverse (322232330022132), we get a palindrome (553452363254355).

The spelling of 231220033232223 in words is "two hundred thirty-one trillion, two hundred twenty billion, thirty-three million, two hundred thirty-two thousand, two hundred twenty-three".

Divisors: 1 3 7 21 667549 2002647 4672843 14018529 16493887 49481661 115457209 346371627 11010477772963 33031433318889 77073344410741 231220033232223