230944686390181 has 4 divisors (see below), whose sum is σ = 231418905459232. Its totient is φ = 230470467321132.

The previous prime is 230944686390163. The next prime is 230944686390211. The reversal of 230944686390181 is 181093686449032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230944686390181 - 2²³ = 230944678001573 is a prime.

It is a super-2 number, since 2×230944686390181² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230944686390101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237109533795 + ... + 237109534768.

It is an arithmetic number, because the mean of its divisors is an integer number (57854726364808).

Almost surely, 2^{230944686390181} is an apocalyptic number.

It is an amenable number.

230944686390181 is a deficient number, since it is larger than the sum of its proper divisors (474219069051).

230944686390181 is an equidigital number, since it uses as much as digits as its factorization.

230944686390181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474219069050.

The product of its (nonzero) digits is 53747712, while the sum is 64.

The spelling of 230944686390181 in words is "two hundred thirty trillion, nine hundred forty-four billion, six hundred eighty-six million, three hundred ninety thousand, one hundred eighty-one".