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20303230323 = 310365706247
BaseRepresentation
bin10010111010001010…
…101011010101110011
31221101222002222001110
4102322022223111303
5313040111332243
613154400404403
71316063416215
oct227212532563
957358088043
1020303230323
11867970a4a2
123b27616703
131bb7466b6c
14da869a5b5
157dc6b6e33
hex4ba2ab573

20303230323 has 8 divisors (see below), whose sum is σ = 27333799168. Its totient is φ = 13404074184.

The previous prime is 20303230309. The next prime is 20303230327. The reversal of 20303230323 is 32303230302.

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

It is not a de Polignac number, because 20303230323 - 214 = 20303213939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20303230323.

It is not an unprimeable number, because it can be changed into a prime (20303230327) 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 7 ways as a sum of consecutive naturals, for example, 32852815 + ... + 32853432.

It is an arithmetic number, because the mean of its divisors is an integer number (3416724896).

Almost surely, 220303230323 is an apocalyptic number.

20303230323 is a deficient number, since it is larger than the sum of its proper divisors (7030568845).

20303230323 is a wasteful number, since it uses less digits than its factorization.

20303230323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65706353.

The product of its (nonzero) digits is 1944, while the sum is 21.

Subtracting from 20303230323 its sum of digits (21), we obtain a palindrome (20303230302).

Adding to 20303230323 its reverse (32303230302), we get a palindrome (52606460625).

The spelling of 20303230323 in words is "twenty billion, three hundred three million, two hundred thirty thousand, three hundred twenty-three".

Divisors: 1 3 103 309 65706247 197118741 6767743441 20303230323