13531133400 has 48 divisors (see below), whose sum is σ = 41946515400. Its totient is φ = 3608302080.

The previous prime is 13531133387. The next prime is 13531133411. The reversal of 13531133400 is 433113531.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11275345 + ... + 11276544.

Almost surely, 2^13531133400 is an apocalyptic number.

13531133400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531133400 is an abundant number, since it is smaller than the sum of its proper divisors (28415382000).

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

13531133400 is a wasteful number, since it uses less digits than its factorization.

13531133400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22551908 (or 22551899 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 13531133400 its reverse (433113531), we get a palindrome (13964246931).

The spelling of 13531133400 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty-three thousand, four hundred".