243305440034 has 4 divisors (see below), whose sum is σ = 364958160054. Its totient is φ = 121652720016.

The previous prime is 243305439997. The next prime is 243305440043. The reversal of 243305440034 is 430044503342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 430044503342 = 2 ⋅215022251671.

It can be written as a sum of positive squares in only one way, i.e., 205476357025 + 37829083009 = 453295^2 + 194497^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60826360007 + ... + 60826360010.

Almost surely, 2^243305440034 is an apocalyptic number.

243305440034 is a deficient number, since it is larger than the sum of its proper divisors (121652720020).

243305440034 is a wasteful number, since it uses less digits than its factorization.

243305440034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121652720019.

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 243305440034 its reverse (430044503342), we get a palindrome (673349943376).

The spelling of 243305440034 in words is "two hundred forty-three billion, three hundred five million, four hundred forty thousand, thirty-four".