1243331020343 has 4 divisors (see below), whose sum is σ = 1243420617840. Its totient is φ = 1243241422848.

The previous prime is 1243331020301. The next prime is 1243331020363. The reversal of 1243331020343 is 3430201333421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1243331020343 - 2³⁸ = 968453113399 is a prime.

It is a super-2 number, since 2×1243331020343² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243331020363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44777930 + ... + 44805687.

It is an arithmetic number, because the mean of its divisors is an integer number (310855154460).

Almost surely, 2^{1243331020343} is an apocalyptic number.

1243331020343 is a deficient number, since it is larger than the sum of its proper divisors (89597497).

1243331020343 is an equidigital number, since it uses as much as digits as its factorization.

1243331020343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89597496.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 1243331020343 its reverse (3430201333421), we get a palindrome (4673532353764).

The spelling of 1243331020343 in words is "one trillion, two hundred forty-three billion, three hundred thirty-one million, twenty thousand, three hundred forty-three".