13113242501 has 4 divisors (see below), whose sum is σ = 13118733900. Its totient is φ = 13107751104.

The previous prime is 13113242489. The next prime is 13113242531. The reversal of 13113242501 is 10524231131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2621337601 + 10491904900 = 51199^2 + 102430^2 .

It is a cyclic number.

It is not a de Polignac number, because 13113242501 - 2⁶ = 13113242437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113242531) 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, 2742116 + ... + 2746893.

It is an arithmetic number, because the mean of its divisors is an integer number (3279683475).

Almost surely, 2^13113242501 is an apocalyptic number.

It is an amenable number.

13113242501 is a deficient number, since it is larger than the sum of its proper divisors (5491399).

13113242501 is an equidigital number, since it uses as much as digits as its factorization.

13113242501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491398.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 13113242501 its reverse (10524231131), we get a palindrome (23637473632).

The spelling of 13113242501 in words is "thirteen billion, one hundred thirteen million, two hundred forty-two thousand, five hundred one".