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20312422330 = 2531617913597
BaseRepresentation
bin10010111010101101…
…101111011110111010
31221102121101222010011
4102322231233132322
5313044440003310
613155325412134
71316234512114
oct227255573672
957377358104
1020312422330
1186839185a2
123b2a70a04a
131bb9334a15
14da99b03b4
157dd3d078a
hex4bab6f7ba

20312422330 has 64 divisors (see below), whose sum is σ = 38848942080. Its totient is φ = 7635513600.

The previous prime is 20312422313. The next prime is 20312422337. The reversal of 20312422330 is 3322421302.

It is not an unprimeable number, because it can be changed into a prime (20312422337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1487092 + ... + 1500688.

It is an arithmetic number, because the mean of its divisors is an integer number (607014720).

Almost surely, 220312422330 is an apocalyptic number.

20312422330 is a deficient number, since it is larger than the sum of its proper divisors (18536519750).

20312422330 is a wasteful number, since it uses less digits than its factorization.

20312422330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13775.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20312422330 its reverse (3322421302), we get a palindrome (23634843632).

The spelling of 20312422330 in words is "twenty billion, three hundred twelve million, four hundred twenty-two thousand, three hundred thirty".

Divisors: 1 2 5 10 31 61 62 79 122 155 158 305 310 395 610 790 1891 2449 3782 4819 4898 9455 9638 12245 13597 18910 24095 24490 27194 48190 67985 135970 149389 298778 421507 746945 829417 843014 1074163 1493890 1658834 2107535 2148326 4147085 4215070 5370815 8294170 10741630 25711927 33299053 51423854 65523943 66598106 128559635 131047886 166495265 257119270 327619715 332990530 655239430 2031242233 4062484466 10156211165 20312422330