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13120212330 = 234516197793
BaseRepresentation
bin11000011100000011…
…01000110101101010
31020212100222211210000
430032001220311222
5203332233243310
610005523403430
7643062651621
oct141601506552
936770884700
1013120212330
115623021795
122661b23576
131311271464
148c66dc6b8
1551bc9a4c0
hex30e068d6a

13120212330 has 40 divisors (see below), whose sum is σ = 35278795332. Its totient is φ = 3498723072.

The previous prime is 13120212317. The next prime is 13120212373. The reversal of 13120212330 is 3321202131.

13120212330 is a `hidden beast` number, since 1 + 3 + 120 + 212 + 330 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12252497481 + 867714849 = 110691^2 + 29457^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8098087 + ... + 8099706.

Almost surely, 213120212330 is an apocalyptic number.

13120212330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13120212330 is an abundant number, since it is smaller than the sum of its proper divisors (22158583002).

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

13120212330 is a wasteful number, since it uses less digits than its factorization.

13120212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16197812 (or 16197803 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13120212330 its reverse (3321202131), we get a palindrome (16441414461).

The spelling of 13120212330 in words is "thirteen billion, one hundred twenty million, two hundred twelve thousand, three hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 810 16197793 32395586 48593379 80988965 97186758 145780137 161977930 242966895 291560274 437340411 485933790 728900685 874680822 1312021233 1457801370 2186702055 2624042466 4373404110 6560106165 13120212330