123730361 has 2 divisors, whose sum is σ = 123730362. Its totient is φ = 123730360.

The previous prime is 123730357. The next prime is 123730379. The reversal of 123730361 is 163037321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119486761 + 4243600 = 10931^2 + 2060^2 .

It is an emirp because it is prime and its reverse (163037321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123730361 - 2² = 123730357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123730361.

It is not a weakly prime, because it can be changed into another prime (123730861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61865180 + 61865181.

It is an arithmetic number, because the mean of its divisors is an integer number (61865181).

Almost surely, 2^123730361 is an apocalyptic number.

It is an amenable number.

123730361 is a deficient number, since it is larger than the sum of its proper divisors (1).

123730361 is an equidigital number, since it uses as much as digits as its factorization.

123730361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 123730361 is about 11123.4149882129. The cubic root of 123730361 is about 498.3013839417.

Adding to 123730361 its reverse (163037321), we get a palindrome (286767682).

It can be divided in two parts, 12 and 3730361, that added together give a palindrome (3730373).

The spelling of 123730361 in words is "one hundred twenty-three million, seven hundred thirty thousand, three hundred sixty-one".