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13311030020 = 22512727718919
BaseRepresentation
bin11000110010110011…
…00011001100000100
31021100200001101102212
430121121203030010
5204230110430040
610040501322552
7650600613461
oct143131431404
937320041385
1013311030020
115710802962
1226b5a06458
131341962132
14903bb0668
1552d8ddd65
hex319663304

13311030020 has 48 divisors (see below), whose sum is σ = 28276469760. Its totient is φ = 5263138944.

The previous prime is 13311030017. The next prime is 13311030023. The reversal of 13311030020 is 2003011331.

It is an interprime number because it is at equal distance from previous prime (13311030017) and next prime (13311030023).

It is a junction number, because it is equal to n+sod(n) for n = 13311029977 and 13311030004.

It is not an unprimeable number, because it can be changed into a prime (13311030023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694121 + ... + 713039.

It is an arithmetic number, because the mean of its divisors is an integer number (589093120).

Almost surely, 213311030020 is an apocalyptic number.

13311030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311030020 is an abundant number, since it is smaller than the sum of its proper divisors (14965439740).

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

13311030020 is a wasteful number, since it uses less digits than its factorization.

13311030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19332 (or 19330 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 13311030020 its reverse (2003011331), we get a palindrome (15314041351).

The spelling of 13311030020 in words is "thirteen billion, three hundred eleven million, thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 127 254 277 508 554 635 1108 1270 1385 2540 2770 5540 18919 35179 37838 70358 75676 94595 140716 175895 189190 351790 378380 703580 2402713 4805426 5240563 9610852 10481126 12013565 20962252 24027130 26202815 48054260 52405630 104811260 665551501 1331103002 2662206004 3327757505 6655515010 13311030020