230723645 has 4 divisors (see below), whose sum is σ = 276868380. Its totient is φ = 184578912.

The previous prime is 230723641. The next prime is 230723663. The reversal of 230723645 is 546327032.

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 110733529 + 119990116 = 10523^2 + 10954^2 .

It is a cyclic number.

It is not a de Polignac number, because 230723645 - 2² = 230723641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230723641) 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, 23072360 + ... + 23072369.

It is an arithmetic number, because the mean of its divisors is an integer number (69217095).

Almost surely, 2^230723645 is an apocalyptic number.

It is an amenable number.

230723645 is a deficient number, since it is larger than the sum of its proper divisors (46144735).

230723645 is an equidigital number, since it uses as much as digits as its factorization.

230723645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46144734.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 230723645 is about 15189.5900208004. The cubic root of 230723645 is about 613.3344627880.

It can be divided in two parts, 2307 and 23645, that added together give a palindrome (25952).

The spelling of 230723645 in words is "two hundred thirty million, seven hundred twenty-three thousand, six hundred forty-five".