230971133 has 2 divisors, whose sum is σ = 230971134. Its totient is φ = 230971132.

The previous prime is 230971123. The next prime is 230971159. The reversal of 230971133 is 331179032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211935364 + 19035769 = 14558^2 + 4363^2 .

It is a cyclic number.

It is not a de Polignac number, because 230971133 - 2¹⁴ = 230954749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 230971096 and 230971105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230971123) 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, 115485566 + 115485567.

It is an arithmetic number, because the mean of its divisors is an integer number (115485567).

Almost surely, 2^230971133 is an apocalyptic number.

It is an amenable number.

230971133 is a deficient number, since it is larger than the sum of its proper divisors (1).

230971133 is an equidigital number, since it uses as much as digits as its factorization.

230971133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 230971133 is about 15197.7344693214. The cubic root of 230971133 is about 613.5536841828.

The spelling of 230971133 in words is "two hundred thirty million, nine hundred seventy-one thousand, one hundred thirty-three".