13401020340 has 108 divisors (see below), whose sum is σ = 42902034084. Its totient is φ = 3385504512.

The previous prime is 13401020251. The next prime is 13401020363. The reversal of 13401020340 is 4302010431.

It can be written as a sum of positive squares in 2 ways, for example, as 9927332496 + 3473687844 = 99636^2 + 58938^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38137 + ... + 168096.

Almost surely, 2^13401020340 is an apocalyptic number.

13401020340 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 13401020340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21451017042).

13401020340 is an abundant number, since it is smaller than the sum of its proper divisors (29501013744).

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

13401020340 is a wasteful number, since it uses less digits than its factorization.

13401020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206286 (or 206262 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 13401020340 its reverse (4302010431), we get a palindrome (17703030771).

Subtracting from 13401020340 its reverse (4302010431), we obtain a palindrome (9099009909).

The spelling of 13401020340 in words is "thirteen billion, four hundred one million, twenty thousand, three hundred forty".