13531010521 has 4 divisors (see below), whose sum is σ = 15464012032. Its totient is φ = 11598009012.

The previous prime is 13531010503. The next prime is 13531010533. The reversal of 13531010521 is 12501013531.

13531010521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13531010521 - 2¹⁵ = 13530977753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13531010492 and 13531010501.

It is not an unprimeable number, because it can be changed into a prime (13531010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966500745 + ... + 966500758.

It is an arithmetic number, because the mean of its divisors is an integer number (3866003008).

Almost surely, 2^13531010521 is an apocalyptic number.

It is an amenable number.

13531010521 is a deficient number, since it is larger than the sum of its proper divisors (1933001511).

13531010521 is an equidigital number, since it uses as much as digits as its factorization.

13531010521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933001510.

The product of its (nonzero) digits is 450, while the sum is 22.

The spelling of 13531010521 in words is "thirteen billion, five hundred thirty-one million, ten thousand, five hundred twenty-one".