13531002501 has 4 divisors (see below), whose sum is σ = 18041336672. Its totient is φ = 9020668332.

The previous prime is 13531002467. The next prime is 13531002503. The reversal of 13531002501 is 10520013531.

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 not a de Polignac number, because 13531002501 - 2⁹ = 13531001989 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 (13531002503) 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, 2255167081 + ... + 2255167086.

It is an arithmetic number, because the mean of its divisors is an integer number (4510334168).

Almost surely, 2^13531002501 is an apocalyptic number.

It is an amenable number.

13531002501 is a deficient number, since it is larger than the sum of its proper divisors (4510334171).

13531002501 is an equidigital number, since it uses as much as digits as its factorization.

13531002501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510334170.

The product of its (nonzero) digits is 450, while the sum is 21.

The spelling of 13531002501 in words is "thirteen billion, five hundred thirty-one million, two thousand, five hundred one".