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231043421104121 = 1714600779308269
BaseRepresentation
bin110100100010000111111101…
…000010101110011111111001
31010022001112110021012212122002
4310202013331002232133321
5220240403411300312441
62135215514332110345
766444223234036253
oct6442077502563771
91108045407185562
10231043421104121
1167687a67a1850a
1221ab591a3053b5
139bbc3bb750b82
14410a7c00c6cd3
151ba9e825dbb9b
hexd221fd0ae7f9

231043421104121 has 8 divisors (see below), whose sum is σ = 244634404411080. Its totient is φ = 217452459333888.

The previous prime is 231043421104081. The next prime is 231043421104123. The reversal of 231043421104121 is 121401124340132.

It can be written as a sum of positive squares in 4 ways, for example, as 34218346626025 + 196825074478096 = 5849645^2 + 14029436^2 .

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 231043421104121 - 210 = 231043421103097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231043421104123) 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, 20167175 + ... + 29475443.

It is an arithmetic number, because the mean of its divisors is an integer number (30579300551385).

Almost surely, 2231043421104121 is an apocalyptic number.

It is an amenable number.

231043421104121 is a deficient number, since it is larger than the sum of its proper divisors (13590983306959).

231043421104121 is a wasteful number, since it uses less digits than its factorization.

231043421104121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10768363.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 231043421104121 its reverse (121401124340132), we get a palindrome (352444545444253).

The spelling of 231043421104121 in words is "two hundred thirty-one trillion, forty-three billion, four hundred twenty-one million, one hundred four thousand, one hundred twenty-one".

Divisors: 1 17 1460077 9308269 24821309 158240573 13590789476713 231043421104121