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13122403230 = 2353179178609
BaseRepresentation
bin11000011100010011…
…11111101110011110
31020212112010011010110
430032021333232132
5203333313400410
610010042350450
7643120405236
oct141611775636
936775104113
1013122403230
115624288852
1226627bb426
13131185a751
148c6b0ccc6
1551c07e720
hex30e27fb9e

13122403230 has 64 divisors (see below), whose sum is σ = 32921395200. Its totient is φ = 3343541760.

The previous prime is 13122403223. The next prime is 13122403247. The reversal of 13122403230 is 3230422131.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13122403197 and 13122403206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15835 + ... + 162774.

It is an arithmetic number, because the mean of its divisors is an integer number (514396800).

Almost surely, 213122403230 is an apocalyptic number.

13122403230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13122403230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16460697600).

13122403230 is an abundant number, since it is smaller than the sum of its proper divisors (19798991970).

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

13122403230 is a wasteful number, since it uses less digits than its factorization.

13122403230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178729.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13122403230 its reverse (3230422131), we get a palindrome (16352825361).

The spelling of 13122403230 in words is "thirteen billion, one hundred twenty-two million, four hundred three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 31 62 79 93 155 158 186 237 310 395 465 474 790 930 1185 2370 2449 4898 7347 12245 14694 24490 36735 73470 178609 357218 535827 893045 1071654 1786090 2679135 5358270 5536879 11073758 14110111 16610637 27684395 28220222 33221274 42330333 55368790 70550555 83053185 84660666 141101110 166106370 211651665 423303330 437413441 874826882 1312240323 2187067205 2624480646 4374134410 6561201615 13122403230