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230133031 is a prime number
BaseRepresentation
bin11011011011110…
…00110100100111
3121001000222011121
431231320310213
5432403224111
634500314411
75463045532
oct1555706447
9531028147
10230133031
111089a4397
12650a2a07
13388a79bb
14227c7a19
151530c871
hexdb78d27

230133031 has 2 divisors, whose sum is σ = 230133032. Its totient is φ = 230133030.

The previous prime is 230132999. The next prime is 230133047. The reversal of 230133031 is 130331032.

It is an a-pointer prime, because the next prime (230133047) can be obtained adding 230133031 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 230133031 - 25 = 230132999 is a prime.

It is a super-2 number, since 2×2301330312 = 105922423914493922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230132996 and 230133014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230133061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115066515 + 115066516.

It is an arithmetic number, because the mean of its divisors is an integer number (115066516).

Almost surely, 2230133031 is an apocalyptic number.

230133031 is a deficient number, since it is larger than the sum of its proper divisors (1).

230133031 is an equidigital number, since it uses as much as digits as its factorization.

230133031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 230133031 is about 15170.1361562776. The cubic root of 230133031 is about 612.8106709946.

Adding to 230133031 its reverse (130331032), we get a palindrome (360464063).

The spelling of 230133031 in words is "two hundred thirty million, one hundred thirty-three thousand, thirty-one".