230723261 has 2 divisors, whose sum is σ = 230723262. Its totient is φ = 230723260.

The previous prime is 230723249. The next prime is 230723263. The reversal of 230723261 is 162327032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225570361 + 5152900 = 15019^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 230723261 - 2²² = 226528957 is a prime.

Together with 230723263, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230723261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230723263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115361630 + 115361631.

It is an arithmetic number, because the mean of its divisors is an integer number (115361631).

Almost surely, 2^230723261 is an apocalyptic number.

It is an amenable number.

230723261 is a deficient number, since it is larger than the sum of its proper divisors (1).

230723261 is an equidigital number, since it uses as much as digits as its factorization.

230723261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 230723261 is about 15189.5773805593. The cubic root of 230723261 is about 613.3341225245.

The spelling of 230723261 in words is "two hundred thirty million, seven hundred twenty-three thousand, two hundred sixty-one".