230312861 has 2 divisors, whose sum is σ = 230312862. Its totient is φ = 230312860.

The previous prime is 230312833. The next prime is 230312909. The reversal of 230312861 is 168213032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197936761 + 32376100 = 14069^2 + 5690^2 .

It is a cyclic number.

It is not a de Polignac number, because 230312861 - 2¹⁴ = 230296477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230312861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230312261) 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, 115156430 + 115156431.

It is an arithmetic number, because the mean of its divisors is an integer number (115156431).

Almost surely, 2^230312861 is an apocalyptic number.

It is an amenable number.

230312861 is a deficient number, since it is larger than the sum of its proper divisors (1).

230312861 is an equidigital number, since it uses as much as digits as its factorization.

230312861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 230312861 is about 15176.0621045118. The cubic root of 230312861 is about 612.9702497832.

Adding to 230312861 its reverse (168213032), we get a palindrome (398525893).

The spelling of 230312861 in words is "two hundred thirty million, three hundred twelve thousand, eight hundred sixty-one".