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23131022123 = 1119110674747
BaseRepresentation
bin10101100010101101…
…110110001100101011
32012201001002200011002
4111202231312030223
5334333020201443
614343134025215
71446131305166
oct254255661453
965631080132
1023131022123
11989a94a310
12459664820b
132248274c51
141196076add
15905a912b8
hex562b7632b

23131022123 has 8 divisors (see below), whose sum is σ = 26561939520. Its totient is φ = 19921454280.

The previous prime is 23131022113. The next prime is 23131022177. The reversal of 23131022123 is 32122013132.

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 23131022123 - 210 = 23131021099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23131022095 and 23131022104.

It is not an unprimeable number, because it can be changed into a prime (23131022113) 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, 55337165 + ... + 55337582.

It is an arithmetic number, because the mean of its divisors is an integer number (3320242440).

Almost surely, 223131022123 is an apocalyptic number.

23131022123 is a deficient number, since it is larger than the sum of its proper divisors (3430917397).

23131022123 is a wasteful number, since it uses less digits than its factorization.

23131022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110674777.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23131022123 its reverse (32122013132), we get a palindrome (55253035255).

The spelling of 23131022123 in words is "twenty-three billion, one hundred thirty-one million, twenty-two thousand, one hundred twenty-three".

Divisors: 1 11 19 209 110674747 1217422217 2102820193 23131022123