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20312103144101 = 54138189983149
BaseRepresentation
bin1001001111001010001111…
…01100010100101010100101
32122220211002101120221212012
410213211013230110222211
510130243141401102401
6111111130143404005
74164333564666536
oct447450754245245
978824071527765
1020312103144101
11652135076466a
1223407562b3605
13b4456674ba72
1450317a98a68d
1525356ed8b8bb
hex127947b14aa5

20312103144101 has 8 divisors (see below), whose sum is σ = 20350202187000. Its totient is φ = 20274006144960.

The previous prime is 20312103144071. The next prime is 20312103144103. The reversal of 20312103144101 is 10144130121302.

It can be written as a sum of positive squares in 4 ways, for example, as 209425216900 + 20102677927201 = 457630^2 + 4483601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20312103144101 - 210 = 20312103143077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312103144103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20168675 + ... + 21151823.

It is an arithmetic number, because the mean of its divisors is an integer number (2543775273375).

Almost surely, 220312103144101 is an apocalyptic number.

It is an amenable number.

20312103144101 is a deficient number, since it is larger than the sum of its proper divisors (38099042899).

20312103144101 is an equidigital number, since it uses as much as digits as its factorization.

20312103144101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021879.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 20312103144101 its reverse (10144130121302), we get a palindrome (30456233265403).

The spelling of 20312103144101 in words is "twenty trillion, three hundred twelve billion, one hundred three million, one hundred forty-four thousand, one hundred one".

Divisors: 1 541 38189 983149 20660249 531883609 37545477161 20312103144101