123261113 has 4 divisors (see below), whose sum is σ = 129748560. Its totient is φ = 116773668.

The previous prime is 123261079. The next prime is 123261133. The reversal of 123261113 is 311162321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123261113 - 2¹⁶ = 123195577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123261133) 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, 3243695 + ... + 3243732.

It is an arithmetic number, because the mean of its divisors is an integer number (32437140).

Almost surely, 2^123261113 is an apocalyptic number.

It is an amenable number.

123261113 is a deficient number, since it is larger than the sum of its proper divisors (6487447).

123261113 is an equidigital number, since it uses as much as digits as its factorization.

123261113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487446.

The product of its digits is 216, while the sum is 20.

The square root of 123261113 is about 11102.3021486537. The cubic root of 123261113 is about 497.6706491005.

The spelling of 123261113 in words is "one hundred twenty-three million, two hundred sixty-one thousand, one hundred thirteen".