123911413 has 2 divisors, whose sum is σ = 123911414. Its totient is φ = 123911412.

The previous prime is 123911399. The next prime is 123911429. The reversal of 123911413 is 314119321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89548369 + 34363044 = 9463^2 + 5862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123911413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123911443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61955706 + 61955707.

It is an arithmetic number, because the mean of its divisors is an integer number (61955707).

Almost surely, 2^123911413 is an apocalyptic number.

It is an amenable number.

123911413 is a deficient number, since it is larger than the sum of its proper divisors (1).

123911413 is an equidigital number, since it uses as much as digits as its factorization.

123911413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 25.

The square root of 123911413 is about 11131.5503412597. The cubic root of 123911413 is about 498.5443167520.

The spelling of 123911413 in words is "one hundred twenty-three million, nine hundred eleven thousand, four hundred thirteen".