13103103440 has 40 divisors (see below), whose sum is σ = 34816819200. Its totient is φ = 4492492416.

The previous prime is 13103103439. The next prime is 13103103457. The reversal of 13103103440 is 4430130131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 11698640 + ... + 11699759.

It is an arithmetic number, because the mean of its divisors is an integer number (870420480).

Almost surely, 2^13103103440 is an apocalyptic number.

13103103440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13103103440 is an abundant number, since it is smaller than the sum of its proper divisors (21713715760).

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

13103103440 is a wasteful number, since it uses less digits than its factorization.

13103103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23398419 (or 23398413 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13103103440 its reverse (4430130131), we get a palindrome (17533233571).

The spelling of 13103103440 in words is "thirteen billion, one hundred three million, one hundred three thousand, four hundred forty".