230723749 has 4 divisors (see below), whose sum is σ = 236959564. Its totient is φ = 224487936.

The previous prime is 230723743. The next prime is 230723789. The reversal of 230723749 is 947327032.

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 93412225 + 137311524 = 9665^2 + 11718^2 .

It is a cyclic number.

It is not a de Polignac number, because 230723749 - 2⁹ = 230723237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 6235777 = 230723749 / (2 + 3 + 0 + 7 + 2 + 3 + 7 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230723743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3117852 + ... + 3117925.

It is an arithmetic number, because the mean of its divisors is an integer number (59239891).

Almost surely, 2^230723749 is an apocalyptic number.

It is an amenable number.

230723749 is a deficient number, since it is larger than the sum of its proper divisors (6235815).

230723749 is an equidigital number, since it uses as much as digits as its factorization.

230723749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235814.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 230723749 is about 15189.5934441972. The cubic root of 230723749 is about 613.3345549427.

The spelling of 230723749 in words is "two hundred thirty million, seven hundred twenty-three thousand, seven hundred forty-nine".