13040122523 has 4 divisors (see below), whose sum is σ = 13075654560. Its totient is φ = 13004590488.

The previous prime is 13040122517. The next prime is 13040122553. The reversal of 13040122523 is 32522104031.

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

It is a cyclic number.

It is not a de Polignac number, because 13040122523 - 2⁸ = 13040122267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13040122553) 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, 17765468 + ... + 17766201.

It is an arithmetic number, because the mean of its divisors is an integer number (3268913640).

Almost surely, 2^13040122523 is an apocalyptic number.

13040122523 is a deficient number, since it is larger than the sum of its proper divisors (35532037).

13040122523 is an equidigital number, since it uses as much as digits as its factorization.

13040122523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35532036.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 13040122523 its reverse (32522104031), we get a palindrome (45562226554).

The spelling of 13040122523 in words is "thirteen billion, forty million, one hundred twenty-two thousand, five hundred twenty-three".