123311105447 has 8 divisors (see below), whose sum is σ = 123863142000. Its totient is φ = 122759187264.

The previous prime is 123311105441. The next prime is 123311105479. The reversal of 123311105447 is 744501113321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123311105447 - 2⁴ = 123311105431 is a prime.

It is a super-2 number, since 2×123311105447² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311105441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2563643 + ... + 2611299.

It is an arithmetic number, because the mean of its divisors is an integer number (15482892750).

Almost surely, 2^123311105447 is an apocalyptic number.

123311105447 is a deficient number, since it is larger than the sum of its proper divisors (552036553).

123311105447 is a wasteful number, since it uses less digits than its factorization.

123311105447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59185.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 123311105447 its reverse (744501113321), we get a palindrome (867812218768).

The spelling of 123311105447 in words is "one hundred twenty-three billion, three hundred eleven million, one hundred five thousand, four hundred forty-seven".