123630361 has 2 divisors, whose sum is σ = 123630362. Its totient is φ = 123630360.

The previous prime is 123630319. The next prime is 123630373. The reversal of 123630361 is 163036321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99620361 + 24010000 = 9981^2 + 4900^2 .

It is a cyclic number.

It is not a de Polignac number, because 123630361 - 2¹¹ = 123628313 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (123630761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61815180 + 61815181.

It is an arithmetic number, because the mean of its divisors is an integer number (61815181).

Almost surely, 2^123630361 is an apocalyptic number.

It is an amenable number.

123630361 is a deficient number, since it is larger than the sum of its proper divisors (1).

123630361 is an equidigital number, since it uses as much as digits as its factorization.

123630361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 123630361 is about 11118.9190571746. The cubic root of 123630361 is about 498.1671038603.

Adding to 123630361 its reverse (163036321), we get a palindrome (286666682).

The spelling of 123630361 in words is "one hundred twenty-three million, six hundred thirty thousand, three hundred sixty-one".