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131131221103230 = 23533773129424117
BaseRepresentation
bin11101110100001101011101…
…110110100101001001111110
3122012022000121021002102121020
4131310031131312211021332
5114141423220100300410
61142520503520045010
736422626621345545
oct3564153566451176
9565260537072536
10131131221103230
1138867490802177
121285a138763766
13582280c6c832a
142454adbd3515c
151026055e7ba70
hex77435dda527e

131131221103230 has 32 divisors (see below), whose sum is σ = 314724251615904. Its totient is φ = 34967289964416.

The previous prime is 131131221103199. The next prime is 131131221103243. The reversal of 131131221103230 is 32301122131131.

It is a self number, because there is not a number n which added to its sum of digits gives 131131221103230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63698869 + ... + 65725248.

It is an arithmetic number, because the mean of its divisors is an integer number (9835132862997).

Almost surely, 2131131221103230 is an apocalyptic number.

131131221103230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131131221103230 is an abundant number, since it is smaller than the sum of its proper divisors (183593030512674).

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

131131221103230 is a wasteful number, since it uses less digits than its factorization.

131131221103230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129457900.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 131131221103230 its reverse (32301122131131), we get a palindrome (163432343234361).

The spelling of 131131221103230 in words is "one hundred thirty-one trillion, one hundred thirty-one billion, two hundred twenty-one million, one hundred three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 33773 67546 101319 168865 202638 337730 506595 1013190 129424117 258848234 388272351 647120585 776544702 1294241170 1941361755 3882723510 4371040703441 8742081406882 13113122110323 21855203517205 26226244220646 43710407034410 65565610551615 131131221103230