1243230343 has 4 divisors (see below), whose sum is σ = 1243348848. Its totient is φ = 1243111840.

The previous prime is 1243230337. The next prime is 1243230361. The reversal of 1243230343 is 3430323421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243230343 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 (1243230643) 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, 41803 + ... + 65068.

It is an arithmetic number, because the mean of its divisors is an integer number (310837212).

Almost surely, 2^1243230343 is an apocalyptic number.

1243230343 is a deficient number, since it is larger than the sum of its proper divisors (118505).

1243230343 is a wasteful number, since it uses less digits than its factorization.

1243230343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118504.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 1243230343 is about 35259.4716778343. The cubic root of 1243230343 is about 1075.2691860230.

Adding to 1243230343 its reverse (3430323421), we get a palindrome (4673553764).

The spelling of 1243230343 in words is "one billion, two hundred forty-three million, two hundred thirty thousand, three hundred forty-three".