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20310322053 = 374323994109
BaseRepresentation
bin10010111010100101…
…101110101110000101
31221102110110021002010
4102322211232232011
5313043420301203
613155212404433
71316210613630
oct227245565605
957373407063
1020310322053
11868271362a
123b29a76719
131bb8a7aa58
14da95c4c17
157dd118303
hex4ba96eb85

20310322053 has 32 divisors (see below), whose sum is σ = 31801651200. Its totient is φ = 11288442816.

The previous prime is 20310322033. The next prime is 20310322091. The reversal of 20310322053 is 35022301302.

It is not a de Polignac number, because 20310322053 - 29 = 20310321541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310322003) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 168763 + ... + 262871.

It is an arithmetic number, because the mean of its divisors is an integer number (993801600).

Almost surely, 220310322053 is an apocalyptic number.

It is an amenable number.

20310322053 is a deficient number, since it is larger than the sum of its proper divisors (11491329147).

20310322053 is a wasteful number, since it uses less digits than its factorization.

20310322053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94401.

The product of its (nonzero) digits is 1080, while the sum is 21.

Adding to 20310322053 its reverse (35022301302), we get a palindrome (55332623355).

The spelling of 20310322053 in words is "twenty billion, three hundred ten million, three hundred twenty-two thousand, fifty-three".

Divisors: 1 3 7 21 43 129 239 301 717 903 1673 5019 10277 30831 71939 94109 215817 282327 658763 1976289 4046687 12140061 22492051 28326809 67476153 84980427 157444357 472333071 967158193 2901474579 6770107351 20310322053