13531131552 has 48 divisors (see below), whose sum is σ = 36274960512. Its totient is φ = 4414410240.

The previous prime is 13531131539. The next prime is 13531131553. The reversal of 13531131552 is 25513113531.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (13531131553) 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, 1494949 + ... + 1503972.

It is an arithmetic number, because the mean of its divisors is an integer number (755728344).

Almost surely, 2^13531131552 is an apocalyptic number.

13531131552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13531131552 is an abundant number, since it is smaller than the sum of its proper divisors (22743828960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13531131552 is a wasteful number, since it uses less digits than its factorization.

13531131552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998981 (or 2998973 counting only the distinct ones).

The product of its digits is 6750, while the sum is 30.

The spelling of 13531131552 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty-one thousand, five hundred fifty-two".