1321000141340 has 144 divisors (see below), whose sum is σ = 3096976713600. Its totient is φ = 472850421120.

The previous prime is 1321000141337. The next prime is 1321000141361. The reversal of 1321000141340 is 431410001231.

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 353301191 + ... + 353304929.

Almost surely, 2^{1321000141340} is an apocalyptic number.

1321000141340 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 1321000141340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1548488356800).

1321000141340 is an abundant number, since it is smaller than the sum of its proper divisors (1775976572260).

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

1321000141340 is a wasteful number, since it uses less digits than its factorization.

1321000141340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016 (or 6003 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1321000141340 its reverse (431410001231), we get a palindrome (1752410142571).

The spelling of 1321000141340 in words is "one trillion, three hundred twenty-one billion, one hundred forty-one thousand, three hundred forty".