123113132311 has 4 divisors (see below), whose sum is σ = 132583373272. Its totient is φ = 113642891352.

The previous prime is 123113132249. The next prime is 123113132369. The reversal of 123113132311 is 113231311321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113231311321 = 4517 ⋅25067813.

It is a cyclic number.

It is not a de Polignac number, because 123113132311 - 2¹³ = 123113124119 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 (123113132111) 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, 4735120461 + ... + 4735120486.

It is an arithmetic number, because the mean of its divisors is an integer number (33145843318).

Almost surely, 2^123113132311 is an apocalyptic number.

123113132311 is a deficient number, since it is larger than the sum of its proper divisors (9470240961).

123113132311 is an equidigital number, since it uses as much as digits as its factorization.

123113132311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470240960.

The product of its digits is 324, while the sum is 22.

Adding to 123113132311 its reverse (113231311321), we get a palindrome (236344443632).

The spelling of 123113132311 in words is "one hundred twenty-three billion, one hundred thirteen million, one hundred thirty-two thousand, three hundred eleven".