13431103021 has 16 divisors (see below), whose sum is σ = 16160934400. Its totient is φ = 10904288688.

The previous prime is 13431103013. The next prime is 13431103033. The reversal of 13431103021 is 12030113431.

It is a cyclic number.

It is not a de Polignac number, because 13431103021 - 2³ = 13431103013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13431103021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431103421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1306126 + ... + 1316368.

It is an arithmetic number, because the mean of its divisors is an integer number (1010058400).

Almost surely, 2^13431103021 is an apocalyptic number.

It is an amenable number.

13431103021 is a deficient number, since it is larger than the sum of its proper divisors (2729831379).

13431103021 is a wasteful number, since it uses less digits than its factorization.

13431103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20128.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13431103021 its reverse (12030113431), we get a palindrome (25461216452).

The spelling of 13431103021 in words is "thirteen billion, four hundred thirty-one million, one hundred three thousand, twenty-one".