1013321420340 has 96 divisors (see below), whose sum is σ = 2903930265600. Its totient is φ = 263898155136.

The previous prime is 1013321420299. The next prime is 1013321420413. The reversal of 1013321420340 is 430241233101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013321420340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 917611 + ... + 1693709.

It is an arithmetic number, because the mean of its divisors is an integer number (30249273600).

Almost surely, 2^{1013321420340} is an apocalyptic number.

1013321420340 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 1013321420340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451965132800).

1013321420340 is an abundant number, since it is smaller than the sum of its proper divisors (1890608845260).

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

1013321420340 is a wasteful number, since it uses less digits than its factorization.

1013321420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776621 (or 776619 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1013321420340 its reverse (430241233101), we get a palindrome (1443562653441).

The spelling of 1013321420340 in words is "one trillion, thirteen billion, three hundred twenty-one million, four hundred twenty thousand, three hundred forty".