13530803531 has 8 divisors (see below), whose sum is σ = 15464559840. Its totient is φ = 11597243328.

The previous prime is 13530803509. The next prime is 13530803543.

13530803531 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13530803531 is a prime.

It is a super-2 number, since 2×13530803531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530805531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156005 + ... + 226713.

It is an arithmetic number, because the mean of its divisors is an integer number (1933069980).

Almost surely, 2^13530803531 is an apocalyptic number.

13530803531 is a deficient number, since it is larger than the sum of its proper divisors (1933756309).

13530803531 is an equidigital number, since it uses as much as digits as its factorization.

13530803531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98053.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 13530803531 in words is "thirteen billion, five hundred thirty million, eight hundred three thousand, five hundred thirty-one".