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230123111 = 1271811993
BaseRepresentation
bin11011011011101…
…10011001100111
3121001000110120012
431231312121213
5432402414421
634500200435
75463004601
oct1555663147
9531013505
10230123111
11108997999
126509911b
13388a332a
14227c4171
151530995b
hexdb76667

230123111 has 4 divisors (see below), whose sum is σ = 231935232. Its totient is φ = 228310992.

The previous prime is 230123099. The next prime is 230123167. The reversal of 230123111 is 111321032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230123111 - 214 = 230106727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230125111) 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, 905870 + ... + 906123.

It is an arithmetic number, because the mean of its divisors is an integer number (57983808).

Almost surely, 2230123111 is an apocalyptic number.

230123111 is a deficient number, since it is larger than the sum of its proper divisors (1812121).

230123111 is a wasteful number, since it uses less digits than its factorization.

230123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812120.

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

The square root of 230123111 is about 15169.8091945812. The cubic root of 230123111 is about 612.8018656974.

Adding to 230123111 its reverse (111321032), we get a palindrome (341444143).

The spelling of 230123111 in words is "two hundred thirty million, one hundred twenty-three thousand, one hundred eleven".

Divisors: 1 127 1811993 230123111