13531302501 has 4 divisors (see below), whose sum is σ = 18041736672. Its totient is φ = 9020868332.

The previous prime is 13531302487. The next prime is 13531302509. The reversal of 13531302501 is 10520313531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13531302501 - 2³⁰ = 12457560677 is a prime.

It is a super-2 number, since 2×13531302501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531302509) 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, 2255217081 + ... + 2255217086.

It is an arithmetic number, because the mean of its divisors is an integer number (4510434168).

Almost surely, 2^13531302501 is an apocalyptic number.

It is an amenable number.

13531302501 is a deficient number, since it is larger than the sum of its proper divisors (4510434171).

13531302501 is an equidigital number, since it uses as much as digits as its factorization.

13531302501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510434170.

The product of its (nonzero) digits is 1350, while the sum is 24.

The spelling of 13531302501 in words is "thirteen billion, five hundred thirty-one million, three hundred two thousand, five hundred one".