13531435320 has 64 divisors (see below), whose sum is σ = 43716949920. Its totient is φ = 3330814464.

The previous prime is 13531435283. The next prime is 13531435331. The reversal of 13531435320 is 2353413531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4335439 + ... + 4338558.

Almost surely, 2^13531435320 is an apocalyptic number.

13531435320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531435320 is an abundant number, since it is smaller than the sum of its proper divisors (30185514600).

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

13531435320 is a wasteful number, since it uses less digits than its factorization.

13531435320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8674024 (or 8674020 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 13531435320 its reverse (2353413531), we get a palindrome (15884848851).

The spelling of 13531435320 in words is "thirteen billion, five hundred thirty-one million, four hundred thirty-five thousand, three hundred twenty".