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231213110101311 = 31350311786364383
BaseRepresentation
bin110100100100100101111111…
…010010111000010100111111
31010022122202110012000002002210
4310210211333102320110333
5220301143422141220221
62135425500400151503
766462411260520552
oct6444457722702477
91108582405002083
10231213110101311
1167742a24a36668
1221b22796908593
139c023c2127010
144114aba724699
151bae5b49a3276
hexd2497f4b853f

231213110101311 has 16 divisors (see below), whose sum is σ = 332658348374016. Its totient is φ = 142002118074336.

The previous prime is 231213110101291. The next prime is 231213110101321. The reversal of 231213110101311 is 113101011312132.

It is not a de Polignac number, because 231213110101311 - 211 = 231213110099263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231213110101321) 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, 5893162575 + ... + 5893201808.

It is an arithmetic number, because the mean of its divisors is an integer number (20791146773376).

Almost surely, 2231213110101311 is an apocalyptic number.

231213110101311 is a deficient number, since it is larger than the sum of its proper divisors (101445238272705).

231213110101311 is a wasteful number, since it uses less digits than its factorization.

231213110101311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11786364902.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 231213110101311 its reverse (113101011312132), we get a palindrome (344314121413443).

The spelling of 231213110101311 in words is "two hundred thirty-one trillion, two hundred thirteen billion, one hundred ten million, one hundred one thousand, three hundred eleven".

Divisors: 1 3 13 39 503 1509 6539 19617 11786364383 35359093149 153222736979 459668210937 5928541284649 17785623853947 77071036700437 231213110101311