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1213030303030 = 257213190428619
BaseRepresentation
bin10001101001101110001…
…111011000010100110110
311021222001011112002101101
4101221232033120110312
5124333241224144110
62325131453120314
7153432010310500
oct21515617302466
94258034462341
101213030303030
11428496a89677
1217711548909a
138a5080395a0
14429d4d00d70
1521848b2613a
hex11a6e3d8536

1213030303030 has 48 divisors (see below), whose sum is σ = 2735316697680. Its totient is φ = 383904093888.

The previous prime is 1213030303027. The next prime is 1213030303081. The reversal of 1213030303030 is 303030303121.

1213030303030 is a modest number, since divided by 30303030 gives 12130 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1213030302989 and 1213030303007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95207940 + ... + 95220679.

It is an arithmetic number, because the mean of its divisors is an integer number (56985764535).

Almost surely, 21213030303030 is an apocalyptic number.

1213030303030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213030303030 is an abundant number, since it is smaller than the sum of its proper divisors (1522286394650).

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

1213030303030 is a wasteful number, since it uses less digits than its factorization.

1213030303030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190428653 (or 190428646 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 1213030303030 its reverse (303030303121), we get a palindrome (1516060606151).

Subtracting from 1213030303030 its reverse (303030303121), we obtain a palindrome (909999999909).

The spelling of 1213030303030 in words is "one trillion, two hundred thirteen billion, thirty million, three hundred three thousand, thirty".

Divisors: 1 2 5 7 10 13 14 26 35 49 65 70 91 98 130 182 245 455 490 637 910 1274 3185 6370 190428619 380857238 952143095 1333000333 1904286190 2475572047 2666000666 4951144094 6665001665 9331002331 12377860235 13330003330 17329004329 18662004662 24755720470 34658008658 46655011655 86645021645 93310023310 121303030303 173290043290 242606060606 606515151515 1213030303030