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13103331212 = 2261914233719
BaseRepresentation
bin11000011010000010…
…01111011110001100
31020211012020012020102
430031001033132030
5203313423044322
610004121510232
7642466322546
oct141501173614
936735205212
1013103331212
115614541754
122658342378
13130a91082a
148c4386696
1551a563792
hex30d04f78c

13103331212 has 24 divisors (see below), whose sum is σ = 22990195200. Its totient is φ = 6534727056.

The previous prime is 13103331191. The next prime is 13103331217. The reversal of 13103331212 is 21213330131.

It is not an unprimeable number, because it can be changed into a prime (13103331217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3521489 + ... + 3525207.

It is an arithmetic number, because the mean of its divisors is an integer number (957924800).

Almost surely, 213103331212 is an apocalyptic number.

It is an amenable number.

13103331212 is a deficient number, since it is larger than the sum of its proper divisors (9886863988).

13103331212 is a wasteful number, since it uses less digits than its factorization.

13103331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765 (or 5763 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13103331212 its reverse (21213330131), we get a palindrome (34316661343).

The spelling of 13103331212 in words is "thirteen billion, one hundred three million, three hundred thirty-one thousand, two hundred twelve".

Divisors: 1 2 4 619 1238 1423 2476 2846 3719 5692 7438 14876 880837 1761674 2302061 3523348 4604122 5292137 9208244 10584274 21168548 3275832803 6551665606 13103331212