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20330231221223 = 711264028976899
BaseRepresentation
bin1001001111101100000000…
…01101011100101111100111
32122222112212202202200122222
410213312000031130233213
510131042303143034343
6111123325043142555
74165545040053410
oct447660015345747
978875782680588
1020330231221223
116529003575290
122344175374a5b
13b46195373811
14503dba3d6807
15253c815e3a68
hex127d8035cbe7

20330231221223 has 8 divisors (see below), whose sum is σ = 25346781782400. Its totient is φ = 15841738613880.

The previous prime is 20330231221217. The next prime is 20330231221243. The reversal of 20330231221223 is 32212213203302.

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 20330231221223 - 28 = 20330231220967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20330231221192 and 20330231221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330231221243) 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, 132014488373 + ... + 132014488526.

It is an arithmetic number, because the mean of its divisors is an integer number (3168347722800).

Almost surely, 220330231221223 is an apocalyptic number.

20330231221223 is a deficient number, since it is larger than the sum of its proper divisors (5016550561177).

20330231221223 is a wasteful number, since it uses less digits than its factorization.

20330231221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264028976917.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 20330231221223 its reverse (32212213203302), we get a palindrome (52542444424525).

The spelling of 20330231221223 in words is "twenty trillion, three hundred thirty billion, two hundred thirty-one million, two hundred twenty-one thousand, two hundred twenty-three".

Divisors: 1 7 11 77 264028976899 1848202838293 2904318745889 20330231221223