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13313121330 = 2353717236961
BaseRepresentation
bin11000110011000011…
…00001110000110010
31021100210222122011210
430121201201300302
5204231124340310
610041014220550
7650624443545
oct143141416062
937323878153
1013313121330
115711a01113
1226b6654756
131342214cb2
1490419685c
1552dba3820
hex319861c32

13313121330 has 64 divisors (see below), whose sum is σ = 32838807168. Its totient is φ = 3451714560.

The previous prime is 13313121313. The next prime is 13313121331. The reversal of 13313121330 is 3312131331.

13313121330 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13313121297 and 13313121306.

It is not an unprimeable number, because it can be changed into a prime (13313121331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1909050 + ... + 1916010.

It is an arithmetic number, because the mean of its divisors is an integer number (513106362).

Almost surely, 213313121330 is an apocalyptic number.

13313121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13313121330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16419403584).

13313121330 is an abundant number, since it is smaller than the sum of its proper divisors (19525685838).

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

13313121330 is a wasteful number, since it uses less digits than its factorization.

13313121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8731.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 13313121330 its reverse (3312131331), we get a palindrome (16625252661).

The spelling of 13313121330 in words is "thirteen billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 37 74 111 185 222 370 555 1110 1723 3446 5169 6961 8615 10338 13922 17230 20883 25845 34805 41766 51690 63751 69610 104415 127502 191253 208830 257557 318755 382506 515114 637510 772671 956265 1287785 1545342 1912530 2575570 3863355 7726710 11993803 23987606 35981409 59969015 71962818 119938030 179907045 359814090 443770711 887541422 1331312133 2218853555 2662624266 4437707110 6656560665 13313121330