13531202402 has 16 divisors (see below), whose sum is σ = 20482222680. Its totient is φ = 6703828992.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202402 is 20420213531.

It can be written as a sum of positive squares in 4 ways, for example, as 10463039521 + 3068162881 = 102289^2 + 55391^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126058 + ... + 1138010.

Almost surely, 2^13531202402 is an apocalyptic number.

13531202402 is a deficient number, since it is larger than the sum of its proper divisors (6951020278).

13531202402 is a wasteful number, since it uses less digits than its factorization.

13531202402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17077.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 13531202402 its reverse (20420213531), we get a palindrome (33951415933).

The spelling of 13531202402 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred two".