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13102312420 = 2251743896191
BaseRepresentation
bin11000011001111010…
…10110101111100100
31020211010022102201101
430030331112233210
5203313142444140
610004044005444
7642454550401
oct141475265744
936733272641
1013102312420
115613a0627a
122657b30884
13130a644bb2
148c419d2a8
1551a41199a
hex30cf56be4

13102312420 has 48 divisors (see below), whose sum is σ = 29810930688. Its totient is φ = 4817917440.

The previous prime is 13102312417. The next prime is 13102312469. The reversal of 13102312420 is 2421320131.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433476 + ... + 462715.

It is an arithmetic number, because the mean of its divisors is an integer number (621061056).

Almost surely, 213102312420 is an apocalyptic number.

13102312420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13102312420 is an abundant number, since it is smaller than the sum of its proper divisors (16708618268).

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

13102312420 is a wasteful number, since it uses less digits than its factorization.

13102312420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896260 (or 896258 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13102312420 its reverse (2421320131), we get a palindrome (15523632551).

The spelling of 13102312420 in words is "thirteen billion, one hundred two million, three hundred twelve thousand, four hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 43 68 85 86 170 172 215 340 430 731 860 1462 2924 3655 7310 14620 896191 1792382 3584764 4480955 8961910 15235247 17923820 30470494 38536213 60940988 76176235 77072426 152352470 154144852 192681065 304704940 385362130 655115621 770724260 1310231242 2620462484 3275578105 6551156210 13102312420