13012013123 has 4 divisors (see below), whose sum is σ = 13577752848. Its totient is φ = 12446273400.

The previous prime is 13012013107. The next prime is 13012013137. The reversal of 13012013123 is 32131021031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32131021031 = 191 ⋅168225241.

It is a cyclic number.

It is not a de Polignac number, because 13012013123 - 2⁴ = 13012013107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13012013423) 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, 282869828 + ... + 282869873.

It is an arithmetic number, because the mean of its divisors is an integer number (3394438212).

Almost surely, 2^13012013123 is an apocalyptic number.

13012013123 is a deficient number, since it is larger than the sum of its proper divisors (565739725).

13012013123 is an equidigital number, since it uses as much as digits as its factorization.

13012013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565739724.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13012013123 its reverse (32131021031), we get a palindrome (45143034154).

The spelling of 13012013123 in words is "thirteen billion, twelve million, thirteen thousand, one hundred twenty-three".