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20131230012323 = 231663526320427
BaseRepresentation
bin1001001001111001010101…
…10100000101001110100011
32122021112020000212211222112
410210330222310011032203
510114312224340343243
6110452054232425535
74145301434513663
oct444745264051643
978245200784875
1020131230012323
116461674581681
1223116982482ab
13b3049cc5a4c1
144d84dcc2a1a3
1524d9d5bb2818
hex124f2ad053a3

20131230012323 has 8 divisors (see below), whose sum is σ = 21019132612608. Its totient is φ = 19244380056264.

The previous prime is 20131230012317. The next prime is 20131230012367. The reversal of 20131230012323 is 32321003213102.

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 20131230012323 - 24 = 20131230012307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131230062323) 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, 263121965 + ... + 263198462.

It is an arithmetic number, because the mean of its divisors is an integer number (2627391576576).

Almost surely, 220131230012323 is an apocalyptic number.

20131230012323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20131230012323 is a deficient number, since it is larger than the sum of its proper divisors (887902600285).

20131230012323 is a wasteful number, since it uses less digits than its factorization.

20131230012323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526322113.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20131230012323 its reverse (32321003213102), we get a palindrome (52452233225425).

The spelling of 20131230012323 in words is "twenty trillion, one hundred thirty-one billion, two hundred thirty million, twelve thousand, three hundred twenty-three".

Divisors: 1 23 1663 38249 526320427 12105369821 875270870101 20131230012323