1321431004343 has 8 divisors (see below), whose sum is σ = 1327255020000. Its totient is φ = 1315607455008.

The previous prime is 1321431004303. The next prime is 1321431004379. The reversal of 1321431004343 is 3434001341231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321431004343 - 2⁸ = 1321431004087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321431004303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6351533 + ... + 6556281.

It is an arithmetic number, because the mean of its divisors is an integer number (165906877500).

Almost surely, 2^{1321431004343} is an apocalyptic number.

1321431004343 is a deficient number, since it is larger than the sum of its proper divisors (5824015657).

1321431004343 is a wasteful number, since it uses less digits than its factorization.

1321431004343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233161.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 1321431004343 its reverse (3434001341231), we get a palindrome (4755432345574).

The spelling of 1321431004343 in words is "one trillion, three hundred twenty-one billion, four hundred thirty-one million, four thousand, three hundred forty-three".