1243143343 has 32 divisors (see below), whose sum is σ = 1503714240. Its totient is φ = 1015234560.

The previous prime is 1243143337. The next prime is 1243143383. The reversal of 1243143343 is 3433413421.

It is not a de Polignac number, because 1243143343 - 2¹⁷ = 1243012271 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 (1243143313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574183 + ... + 576343.

It is an arithmetic number, because the mean of its divisors is an integer number (46991070).

Almost surely, 2^1243143343 is an apocalyptic number.

1243143343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1243143343 is a deficient number, since it is larger than the sum of its proper divisors (260570897).

1243143343 is a wasteful number, since it uses less digits than its factorization.

1243143343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347.

The product of its digits is 10368, while the sum is 28.

The square root of 1243143343 is about 35258.2379451952. The cubic root of 1243143343 is about 1075.2441033551.

Adding to 1243143343 its reverse (3433413421), we get a palindrome (4676556764).

The spelling of 1243143343 in words is "one billion, two hundred forty-three million, one hundred forty-three thousand, three hundred forty-three".