13531120503 has 16 divisors (see below), whose sum is σ = 19432702080. Its totient is φ = 8347225824.

The previous prime is 13531120487. The next prime is 13531120543. The reversal of 13531120503 is 30502113531.

It is not a de Polignac number, because 13531120503 - 2⁴ = 13531120487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531120543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757876 + ... + 2762777.

It is an arithmetic number, because the mean of its divisors is an integer number (1214543880).

Almost surely, 2^13531120503 is an apocalyptic number.

13531120503 is a deficient number, since it is larger than the sum of its proper divisors (5901581577).

13531120503 is a wasteful number, since it uses less digits than its factorization.

13531120503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520718.

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

The spelling of 13531120503 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty thousand, five hundred three".