230861 has 2 divisors, whose sum is σ = 230862. Its totient is φ = 230860.

The previous prime is 230849. The next prime is 230863. The reversal of 230861 is 168032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155236 + 75625 = 394^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 230861 - 2¹⁰ = 229837 is a prime.

Together with 230863, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 230861 parts by 679 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115430 + 115431.

It is an arithmetic number, because the mean of its divisors is an integer number (115431).

2²³⁰⁸⁶¹ is an apocalyptic number.

It is an amenable number.

230861 is a deficient number, since it is larger than the sum of its proper divisors (1).

230861 is an equidigital number, since it uses as much as digits as its factorization.

230861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 230861 is about 480.4799683650. The cubic root of 230861 is about 61.3456149266.

Adding to 230861 its reverse (168032), we get a palindrome (398893).

The spelling of 230861 in words is "two hundred thirty thousand, eight hundred sixty-one".