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20310232110 = 2357234205017
BaseRepresentation
bin10010111010100101…
…011000110000101110
31221102110021200200220
4102322211120300232
5313043404411420
613155210432210
71316210060460
oct227245306056
957373250626
1020310232110
118682661aa3
123b29a32666
131bb8a48b2c
14da95a0130
157dd0eb840
hex4ba958c2e

20310232110 has 64 divisors (see below), whose sum is σ = 58130168832. Its totient is φ = 4440496896.

The previous prime is 20310232081. The next prime is 20310232121. The reversal of 20310232110 is 1123201302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20310232110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2097679 + ... + 2107338.

It is an arithmetic number, because the mean of its divisors is an integer number (908283888).

Almost surely, 220310232110 is an apocalyptic number.

20310232110 is an abundant number, since it is smaller than the sum of its proper divisors (37819936722).

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

20310232110 is a wasteful number, since it uses less digits than its factorization.

20310232110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205057.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20310232110 its reverse (1123201302), we get a palindrome (21433433412).

The spelling of 20310232110 in words is "twenty billion, three hundred ten million, two hundred thirty-two thousand, one hundred ten".

Divisors: 1 2 3 5 6 7 10 14 15 21 23 30 35 42 46 69 70 105 115 138 161 210 230 322 345 483 690 805 966 1610 2415 4830 4205017 8410034 12615051 21025085 25230102 29435119 42050170 58870238 63075255 88305357 96715391 126150510 147175595 176610714 193430782 290146173 294351190 441526785 483576955 580292346 677007737 883053570 967153910 1354015474 1450730865 2031023211 2901461730 3385038685 4062046422 6770077370 10155116055 20310232110