230312161 has 4 divisors (see below), whose sum is σ = 236536852. Its totient is φ = 224087472.

The previous prime is 230312123. The next prime is 230312191. The reversal of 230312161 is 161213032.

230312161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 220819600 + 9492561 = 14860^2 + 3081^2 .

It is a cyclic number.

It is not a de Polignac number, because 230312161 - 2¹⁵ = 230279393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230312101) 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, 3112290 + ... + 3112363.

It is an arithmetic number, because the mean of its divisors is an integer number (59134213).

Almost surely, 2^230312161 is an apocalyptic number.

It is an amenable number.

230312161 is a deficient number, since it is larger than the sum of its proper divisors (6224691).

230312161 is an equidigital number, since it uses as much as digits as its factorization.

230312161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224690.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 230312161 is about 15176.0390418581. The cubic root of 230312161 is about 612.9696287735.

Adding to 230312161 its reverse (161213032), we get a palindrome (391525193).

The spelling of 230312161 in words is "two hundred thirty million, three hundred twelve thousand, one hundred sixty-one".