1243200342343 has 4 divisors (see below), whose sum is σ = 1249641795088. Its totient is φ = 1236758889600.

The previous prime is 1243200342323. The next prime is 1243200342379. The reversal of 1243200342343 is 3432430023421.

It is a happy number.

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 1243200342343 - 2¹³ = 1243200334151 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 (1243200342313) 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, 3220726083 + ... + 3220726468.

It is an arithmetic number, because the mean of its divisors is an integer number (312410448772).

Almost surely, 2^{1243200342343} is an apocalyptic number.

1243200342343 is a deficient number, since it is larger than the sum of its proper divisors (6441452745).

1243200342343 is an equidigital number, since it uses as much as digits as its factorization.

1243200342343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6441452744.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 1243200342343 its reverse (3432430023421), we get a palindrome (4675630365764).

The spelling of 1243200342343 in words is "one trillion, two hundred forty-three billion, two hundred million, three hundred forty-two thousand, three hundred forty-three".