230145181 has 4 divisors (see below), whose sum is σ = 263023072. Its totient is φ = 197267292.

The previous prime is 230145127. The next prime is 230145197. The reversal of 230145181 is 181541032.

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 230145181 - 2⁹ = 230144669 is a prime.

It is a super-2 number, since 2×230145181² = 105933608675045522, which 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 (230145101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16438935 + ... + 16438948.

It is an arithmetic number, because the mean of its divisors is an integer number (65755768).

Almost surely, 2^230145181 is an apocalyptic number.

It is an amenable number.

230145181 is a deficient number, since it is larger than the sum of its proper divisors (32877891).

230145181 is an equidigital number, since it uses as much as digits as its factorization.

230145181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32877890.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 230145181 is about 15170.5366088349. The cubic root of 230145181 is about 612.8214553637.

The spelling of 230145181 in words is "two hundred thirty million, one hundred forty-five thousand, one hundred eighty-one".