13531103430 has 128 divisors (see below), whose sum is σ = 35498736000. Its totient is φ = 3280932864.

The previous prime is 13531103429. The next prime is 13531103447. The reversal of 13531103430 is 3430113531.

It is a self number, because there is not a number n which added to its sum of digits gives 13531103430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12113232 + ... + 12114348.

It is an arithmetic number, because the mean of its divisors is an integer number (277333875).

Almost surely, 2^13531103430 is an apocalyptic number.

13531103430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13531103430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17749368000).

13531103430 is an abundant number, since it is smaller than the sum of its proper divisors (21967632570).

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

13531103430 is a wasteful number, since it uses less digits than its factorization.

13531103430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578.

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

Adding to 13531103430 its reverse (3430113531), we get a palindrome (16961216961).

The spelling of 13531103430 in words is "thirteen billion, five hundred thirty-one million, one hundred three thousand, four hundred thirty".