1321312200343 has 32 divisors (see below), whose sum is σ = 1453598006400. Its totient is φ = 1195474108416.

The previous prime is 1321312200319. The next prime is 1321312200349. The reversal of 1321312200343 is 3430022131231.

It is a cyclic number.

It is not a de Polignac number, because 1321312200343 - 2¹⁷ = 1321312069271 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 (1321312200349) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 119106705 + ... + 119117797.

It is an arithmetic number, because the mean of its divisors is an integer number (45424937700).

Almost surely, 2^{1321312200343} is an apocalyptic number.

1321312200343 is a deficient number, since it is larger than the sum of its proper divisors (132285806057).

1321312200343 is a wasteful number, since it uses less digits than its factorization.

1321312200343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1321312200343 its reverse (3430022131231), we get a palindrome (4751334331574).

The spelling of 1321312200343 in words is "one trillion, three hundred twenty-one billion, three hundred twelve million, two hundred thousand, three hundred forty-three".