13531240002 has 32 divisors (see below), whose sum is σ = 31390175232. Its totient is φ = 3808365264.

The previous prime is 13531239989. The next prime is 13531240033. The reversal of 13531240002 is 20004213531.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 2401458 + ... + 2407085.

It is an arithmetic number, because the mean of its divisors is an integer number (980942976).

Almost surely, 2^13531240002 is an apocalyptic number.

13531240002 is an abundant number, since it is smaller than the sum of its proper divisors (17858935230).

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

13531240002 is a wasteful number, since it uses less digits than its factorization.

13531240002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808622.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 13531240002 its reverse (20004213531), we get a palindrome (33535453533).

The spelling of 13531240002 in words is "thirteen billion, five hundred thirty-one million, two hundred forty thousand, two".