13531202431 has 8 divisors (see below), whose sum is σ = 14702835200. Its totient is φ = 12405516120.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202431 is 13420213531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13531202431 - 2⁷ = 13531202303 is a prime.

It is a super-2 number, since 2×13531202431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13531202396 and 13531202405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531202231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11486001 + ... + 11487178.

It is an arithmetic number, because the mean of its divisors is an integer number (1837854400).

Almost surely, 2^13531202431 is an apocalyptic number.

13531202431 is a deficient number, since it is larger than the sum of its proper divisors (1171632769).

13531202431 is a wasteful number, since it uses less digits than its factorization.

13531202431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22973229.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 13531202431 its reverse (13420213531), we get a palindrome (26951415962).

The spelling of 13531202431 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred thirty-one".