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20312323241 = 72769153899
BaseRepresentation
bin10010111010101101…
…010111010010101001
31221102121012221012012
4102322231113102221
5313044423320431
613155323325305
71316233620200
oct227255272251
957377187165
1020312323241
118683860101
123b2a680835
131bb92cb8a2
14da9986237
157dd3b122b
hex4bab574a9

20312323241 has 12 divisors (see below), whose sum is σ = 23632131600. Its totient is φ = 17407976040.

The previous prime is 20312323237. The next prime is 20312323243. The reversal of 20312323241 is 14232321302.

It is not a de Polignac number, because 20312323241 - 22 = 20312323237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20312323243) 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 11 ways as a sum of consecutive naturals, for example, 349910 + ... + 403808.

It is an arithmetic number, because the mean of its divisors is an integer number (1969344300).

Almost surely, 220312323241 is an apocalyptic number.

It is an amenable number.

20312323241 is a deficient number, since it is larger than the sum of its proper divisors (3319808359).

20312323241 is an equidigital number, since it uses as much as digits as its factorization.

20312323241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61604 (or 61597 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20312323241 its reverse (14232321302), we get a palindrome (34544644543).

The spelling of 20312323241 in words is "twenty billion, three hundred twelve million, three hundred twenty-three thousand, two hundred forty-one".

Divisors: 1 7 49 7691 53837 53899 376859 377293 2641051 414537209 2901760463 20312323241