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213231201232 = 24721987136879
BaseRepresentation
bin1100011010010110010…
…0011110101111010000
3202101101110010100102111
43012211210132233100
511443144141414412
6241542420355104
721256032206500
oct3064544365720
9671343110374
10213231201232
11824814aa555
12353aa845a94
1317152580b2a
14a46b431a00
15582ed452a7
hex31a591ebd0

213231201232 has 60 divisors (see below), whose sum is σ = 480831516480. Its totient is φ = 91338141888.

The previous prime is 213231201221. The next prime is 213231201269. The reversal of 213231201232 is 232102132312.

213231201232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1489369 + ... + 1626247.

It is an arithmetic number, because the mean of its divisors is an integer number (8013858608).

Almost surely, 2213231201232 is an apocalyptic number.

It is an amenable number.

213231201232 is an abundant number, since it is smaller than the sum of its proper divisors (267600315248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213231201232 is a wasteful number, since it uses less digits than its factorization.

213231201232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138888 (or 138875 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213231201232 its reverse (232102132312), we get a palindrome (445333333544).

The spelling of 213231201232 in words is "two hundred thirteen billion, two hundred thirty-one million, two hundred one thousand, two hundred thirty-two".

Divisors: 1 2 4 7 8 14 16 28 49 56 98 112 196 392 784 1987 3974 7948 13909 15896 27818 31792 55636 97363 111272 136879 194726 222544 273758 389452 547516 778904 958153 1095032 1557808 1916306 2190064 3832612 6707071 7665224 13414142 15330448 26828284 53656568 107313136 271978573 543957146 1087914292 1903850011 2175828584 3807700022 4351657168 7615400044 13326950077 15230800088 26653900154 30461600176 53307800308 106615600616 213231201232