123611413 has 4 divisors (see below), whose sum is σ = 126952300. Its totient is φ = 120270528.

The previous prime is 123611387. The next prime is 123611417. The reversal of 123611413 is 314116321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314116321 = 6997 ⋅44893.

It can be written as a sum of positive squares in 2 ways, for example, as 81595089 + 42016324 = 9033^2 + 6482^2 .

It is a cyclic number.

It is not a de Polignac number, because 123611413 - 2⁵ = 123611381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123611417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670388 + ... + 1670461.

It is an arithmetic number, because the mean of its divisors is an integer number (31738075).

Almost surely, 2^123611413 is an apocalyptic number.

It is an amenable number.

123611413 is a deficient number, since it is larger than the sum of its proper divisors (3340887).

123611413 is an equidigital number, since it uses as much as digits as its factorization.

123611413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340886.

The product of its digits is 432, while the sum is 22.

The square root of 123611413 is about 11118.0669632810. The cubic root of 123611413 is about 498.1416523114.

Adding to 123611413 its reverse (314116321), we get a palindrome (437727734).

The spelling of 123611413 in words is "one hundred twenty-three million, six hundred eleven thousand, four hundred thirteen".