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1312210120230 = 232514580112447
BaseRepresentation
bin10011000110000101110…
…100010110111000100110
311122110001011211211100100
4103012011310112320212
5132444401242321410
62442453200524530
7163542534662502
oct23060564267046
94573034754310
101312210120230
11466561449249
12192394620746
139698294a759
1447723061302
1524200d4d8c0
hex13185d16e26

1312210120230 has 24 divisors (see below), whose sum is σ = 3411746312832. Its totient is φ = 349922698704.

The previous prime is 1312210120213. The next prime is 1312210120259. The reversal of 1312210120230 is 320210122131.

1312210120230 is a `hidden beast` number, since 1 + 312 + 2 + 1 + 0 + 120 + 230 = 666.

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

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 7290056134 + ... + 7290056313.

It is an arithmetic number, because the mean of its divisors is an integer number (142156096368).

Almost surely, 21312210120230 is an apocalyptic number.

1312210120230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312210120230 is an abundant number, since it is smaller than the sum of its proper divisors (2099536192602).

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

1312210120230 is a wasteful number, since it uses less digits than its factorization.

1312210120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14580112460 (or 14580112457 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1312210120230 its reverse (320210122131), we get a palindrome (1632420242361).

The spelling of 1312210120230 in words is "one trillion, three hundred twelve billion, two hundred ten million, one hundred twenty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 14580112447 29160224894 43740337341 72900562235 87480674682 131221012023 145801124470 218701686705 262442024046 437403373410 656105060115 1312210120230