123811417 has 2 divisors, whose sum is σ = 123811418. Its totient is φ = 123811416.

The previous prime is 123811403. The next prime is 123811447. The reversal of 123811417 is 714118321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88003161 + 35808256 = 9381^2 + 5984^2 .

It is a cyclic number.

It is not a de Polignac number, because 123811417 - 2¹¹ = 123809369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123811447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61905708 + 61905709.

It is an arithmetic number, because the mean of its divisors is an integer number (61905709).

Almost surely, 2^123811417 is an apocalyptic number.

It is an amenable number.

123811417 is a deficient number, since it is larger than the sum of its proper divisors (1).

123811417 is an equidigital number, since it uses as much as digits as its factorization.

123811417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 28.

The square root of 123811417 is about 11127.0578770850. The cubic root of 123811417 is about 498.4101729242.

Adding to 123811417 its reverse (714118321), we get a palindrome (837929738).

The spelling of 123811417 in words is "one hundred twenty-three million, eight hundred eleven thousand, four hundred seventeen".