123013400011 has 4 divisors (see below), whose sum is σ = 123631558000. Its totient is φ = 122395242024.

The previous prime is 123013399997. The next prime is 123013400051. The reversal of 123013400011 is 110004310321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110004310321 = 199 ⋅552785479.

It is a cyclic number.

It is not a de Polignac number, because 123013400011 - 2⁹ = 123013399499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123013400051) 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, 309078696 + ... + 309079093.

It is an arithmetic number, because the mean of its divisors is an integer number (30907889500).

Almost surely, 2^123013400011 is an apocalyptic number.

123013400011 is a deficient number, since it is larger than the sum of its proper divisors (618157989).

123013400011 is an equidigital number, since it uses as much as digits as its factorization.

123013400011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618157988.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123013400011 its reverse (110004310321), we get a palindrome (233017710332).

The spelling of 123013400011 in words is "one hundred twenty-three billion, thirteen million, four hundred thousand, eleven".