13531200403 has 24 divisors (see below), whose sum is σ = 16868704032. Its totient is φ = 10794034944.

The previous prime is 13531200391. The next prime is 13531200409. The reversal of 13531200403 is 30400213531.

It is a de Polignac number, because none of the positive numbers 2^k-13531200403 is a prime.

It is a super-2 number, since 2×13531200403² (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 (13531200409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120550 + ... + 203947.

It is an arithmetic number, because the mean of its divisors is an integer number (702862668).

Almost surely, 2^13531200403 is an apocalyptic number.

13531200403 is a deficient number, since it is larger than the sum of its proper divisors (3337503629).

13531200403 is a wasteful number, since it uses less digits than its factorization.

13531200403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324571 (or 324564 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 13531200403 its reverse (30400213531), we get a palindrome (43931413934).

The spelling of 13531200403 in words is "thirteen billion, five hundred thirty-one million, two hundred thousand, four hundred three".