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13311223003220 = 2251939478874977
BaseRepresentation
bin1100000110110100001010…
…1101111111100001010100
31202010112121000111012011112
43001231002231333201110
53221042341042100340
644151031425354152
72542463341442042
oct301550255774124
952115530435145
1013311223003220
1142722923a946a
1215ab979798958
1375732099101c
143403a38c7392
151813c7285065
hexc1b42b7f854

13311223003220 has 48 divisors (see below), whose sum is σ = 29432267040960. Its totient is φ = 5042974362624.

The previous prime is 13311223003189. The next prime is 13311223003307. The reversal of 13311223003220 is 2230032211331.

13311223003220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×133112230032202 (a number of 27 digits) contains 22 as substring.

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, 2937629 + ... + 5937348.

It is an arithmetic number, because the mean of its divisors is an integer number (613172230020).

Almost surely, 213311223003220 is an apocalyptic number.

13311223003220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13311223003220 is an abundant number, since it is smaller than the sum of its proper divisors (16121044037740).

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

13311223003220 is a wasteful number, since it uses less digits than its factorization.

13311223003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8878952 (or 8878950 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 13311223003220 its reverse (2230032211331), we get a palindrome (15541255214551).

The spelling of 13311223003220 in words is "thirteen trillion, three hundred eleven billion, two hundred twenty-three million, three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 3947 7894 15788 19735 39470 74993 78940 149986 299972 374965 749930 1499860 8874977 17749954 35499908 44374885 88749770 168624563 177499540 337249126 674498252 843122815 1686245630 3372491260 35029534219 70059068438 140118136876 175147671095 350295342190 665561150161 700590684380 1331122300322 2662244600644 3327805750805 6655611501610 13311223003220