Search a number
-
+
13212312230 = 2513536728621
BaseRepresentation
bin11000100111000001…
…11110001010100110
31021002210022000002102
430103200332022212
5204024322442410
610023013412102
7645261541505
oct142340761246
937083260072
1013212312230
115670007807
12268893a032
13132737a140
148d4a3483c
15524dde2a5
hex31383e2a6

13212312230 has 64 divisors (see below), whose sum is σ = 26485195968. Its totient is φ = 4714744320.

The previous prime is 13212312227. The next prime is 13212312247. The reversal of 13212312230 is 3221321231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447320 + ... + 475940.

It is an arithmetic number, because the mean of its divisors is an integer number (413831187).

Almost surely, 213212312230 is an apocalyptic number.

13212312230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13212312230 is an abundant number, since it is smaller than the sum of its proper divisors (13272883738).

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

13212312230 is a wasteful number, since it uses less digits than its factorization.

13212312230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28761.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13212312230 its reverse (3221321231), we get a palindrome (16433633461).

Subtracting from 13212312230 its reverse (3221321231), we obtain a palindrome (9990990999).

The spelling of 13212312230 in words is "thirteen billion, two hundred twelve million, three hundred twelve thousand, two hundred thirty".

Divisors: 1 2 5 10 13 26 53 65 67 106 130 134 265 335 530 670 689 871 1378 1742 3445 3551 4355 6890 7102 8710 17755 28621 35510 46163 57242 92326 143105 230815 286210 372073 461630 744146 1516913 1860365 1917607 3033826 3720730 3835214 7584565 9588035 15169130 19176070 19719869 24928891 39439738 49857782 98599345 101633171 124644455 197198690 203266342 249288910 508165855 1016331710 1321231223 2642462446 6606156115 13212312230