1243343211443 has 4 divisors (see below), whose sum is σ = 1252834381128. Its totient is φ = 1233852041760.

The previous prime is 1243343211437. The next prime is 1243343211449. The reversal of 1243343211443 is 3441123433421.

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

It is an interprime number because it is at equal distance from previous prime (1243343211437) and next prime (1243343211449).

It is a cyclic number.

It is not a de Polignac number, because 1243343211443 - 2²² = 1243339017139 is a prime.

It is a super-2 number, since 2×1243343211443² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243343211449) 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, 4745584646 + ... + 4745584907.

It is an arithmetic number, because the mean of its divisors is an integer number (313208595282).

Almost surely, 2^{1243343211443} is an apocalyptic number.

1243343211443 is a deficient number, since it is larger than the sum of its proper divisors (9491169685).

1243343211443 is an equidigital number, since it uses as much as digits as its factorization.

1243343211443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491169684.

The product of its digits is 82944, while the sum is 35.

Adding to 1243343211443 its reverse (3441123433421), we get a palindrome (4684466644864).

The spelling of 1243343211443 in words is "one trillion, two hundred forty-three billion, three hundred forty-three million, two hundred eleven thousand, four hundred forty-three".