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20310201313 = 23883052231
BaseRepresentation
bin10010111010100101…
…010001001111100001
31221102110020010110021
4102322211101033201
5313043402420223
613155210033441
71316206601623
oct227245211741
957373203407
1020310201313
118682640946
123b29a18881
131bb8a37acc
14da9592c13
157dd0e265d
hex4ba9513e1

20310201313 has 4 divisors (see below), whose sum is σ = 21193253568. Its totient is φ = 19427149060.

The previous prime is 20310201271. The next prime is 20310201323. The reversal of 20310201313 is 31310201302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20310201313 - 217 = 20310070241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310201323) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 441526093 + ... + 441526138.

It is an arithmetic number, because the mean of its divisors is an integer number (5298313392).

Almost surely, 220310201313 is an apocalyptic number.

20310201313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20310201313 is a deficient number, since it is larger than the sum of its proper divisors (883052255).

20310201313 is an equidigital number, since it uses as much as digits as its factorization.

20310201313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883052254.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20310201313 its reverse (31310201302), we get a palindrome (51620402615).

The spelling of 20310201313 in words is "twenty billion, three hundred ten million, two hundred one thousand, three hundred thirteen".

Divisors: 1 23 883052231 20310201313