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20313111130 = 25131722874019
BaseRepresentation
bin10010111010110000…
…010111101001011010
31221102122200221222021
4102322300113221122
5313100124024010
613155352245054
71316243411224
oct227260275132
957378627867
1020313111130
118684249054
123b2a9a078a
131bb95163b0
14da9b0d414
157dd4b98da
hex4bac17a5a

20313111130 has 64 divisors (see below), whose sum is σ = 41721039360. Its totient is φ = 7054193664.

The previous prime is 20313111041. The next prime is 20313111187. The reversal of 20313111130 is 3111131302.

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, 5052261 + ... + 5056279.

It is an arithmetic number, because the mean of its divisors is an integer number (651891240).

Almost surely, 220313111130 is an apocalyptic number.

20313111130 is an abundant number, since it is smaller than the sum of its proper divisors (21407928230).

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

20313111130 is a wasteful number, since it uses less digits than its factorization.

20313111130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 20313111130 its reverse (3111131302), we get a palindrome (23424242432).

The spelling of 20313111130 in words is "twenty billion, three hundred thirteen million, one hundred eleven thousand, one hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 442 1105 2210 2287 4019 4574 8038 11435 20095 22870 29731 38879 40190 52247 59462 68323 77758 104494 136646 148655 194395 261235 297310 341615 388790 505427 522470 683230 888199 1010854 1776398 2527135 4440995 5054270 8881990 9191453 18382906 45957265 91914530 119488889 156254701 238977778 312509402 597444445 781273505 1194888890 1562547010 2031311113 4062622226 10156555565 20313111130