13031333123 has 4 divisors (see below), whose sum is σ = 13597912848. Its totient is φ = 12464753400.

The previous prime is 13031333093. The next prime is 13031333171. The reversal of 13031333123 is 32133313031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13031333123 - 2²² = 13027138819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 566579701 = 13031333123 / (1 + 3 + 0 + 3 + 1 + 3 + 3 + 3 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031333723) 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, 283289828 + ... + 283289873.

It is an arithmetic number, because the mean of its divisors is an integer number (3399478212).

Almost surely, 2^13031333123 is an apocalyptic number.

13031333123 is a deficient number, since it is larger than the sum of its proper divisors (566579725).

13031333123 is an equidigital number, since it uses as much as digits as its factorization.

13031333123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566579724.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 13031333123 its reverse (32133313031), we get a palindrome (45164646154).

The spelling of 13031333123 in words is "thirteen billion, thirty-one million, three hundred thirty-three thousand, one hundred twenty-three".