243343437 has 16 divisors (see below), whose sum is σ = 336051840. Its totient is φ = 156445632.

The previous prime is 243343433. The next prime is 243343439. The reversal of 243343437 is 734343342.

It is not a de Polignac number, because 243343437 - 2² = 243343433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243343398 and 243343407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243343433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124923 + ... + 126855.

It is an arithmetic number, because the mean of its divisors is an integer number (21003240).

Almost surely, 2^243343437 is an apocalyptic number.

It is an amenable number.

243343437 is a deficient number, since it is larger than the sum of its proper divisors (92708403).

243343437 is a wasteful number, since it uses less digits than its factorization.

243343437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412.

The product of its digits is 72576, while the sum is 33.

The square root of 243343437 is about 15599.4691255824. The cubic root of 243343437 is about 624.3189911393.

Adding to 243343437 its reverse (734343342), we get a palindrome (977686779).

The spelling of 243343437 in words is "two hundred forty-three million, three hundred forty-three thousand, four hundred thirty-seven".