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230111321 = 1120919211
BaseRepresentation
bin11011011011100…
…11100001011001
3121000222212101112
431231303201121
5432402030241
634500030105
75462625326
oct1555634131
9530885345
10230111321
1110898a050
1265092335
133889ab5b
14227bdb4d
15153061eb
hexdb73859

230111321 has 4 divisors (see below), whose sum is σ = 251030544. Its totient is φ = 209192100.

The previous prime is 230111293. The next prime is 230111327. The reversal of 230111321 is 123111032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230111321 - 214 = 230094937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230111296 and 230111305.

It is not an unprimeable number, because it can be changed into a prime (230111327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10459595 + ... + 10459616.

It is an arithmetic number, because the mean of its divisors is an integer number (62757636).

Almost surely, 2230111321 is an apocalyptic number.

It is an amenable number.

230111321 is a deficient number, since it is larger than the sum of its proper divisors (20919223).

230111321 is a wasteful number, since it uses less digits than its factorization.

230111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20919222.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 230111321 is about 15169.4205888030. The cubic root of 230111321 is about 612.7914002016.

Adding to 230111321 its reverse (123111032), we get a palindrome (353222353).

The spelling of 230111321 in words is "two hundred thirty million, one hundred eleven thousand, three hundred twenty-one".

Divisors: 1 11 20919211 230111321