13400311040 has 72 divisors (see below), whose sum is σ = 32139283680. Its totient is φ = 5353220096.

The previous prime is 13400311019. The next prime is 13400311049. The reversal of 13400311040 is 4011300431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400311049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052231 + ... + 1064889.

It is an arithmetic number, because the mean of its divisors is an integer number (446378940).

Almost surely, 2^13400311040 is an apocalyptic number.

13400311040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13400311040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16069641840).

13400311040 is an abundant number, since it is smaller than the sum of its proper divisors (18738972640).

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

13400311040 is an equidigital number, since it uses as much as digits as its factorization.

13400311040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13507 (or 13493 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13400311040 its reverse (4011300431), we get a palindrome (17411611471).

The spelling of 13400311040 in words is "thirteen billion, four hundred million, three hundred eleven thousand, forty".