234445105213 has 12 divisors (see below), whose sum is σ = 258291057724. Its totient is φ = 212639644800.

The previous prime is 234445105151. The next prime is 234445105229. The reversal of 234445105213 is 312501544432.

It can be written as a sum of positive squares in 2 ways, for example, as 25429724089 + 209015381124 = 159467^2 + 457182^2 .

It is a de Polignac number, because none of the positive numbers 2^k-234445105213 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 (234445105243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2184978 + ... + 2289763.

Almost surely, 2^234445105213 is an apocalyptic number.

It is an amenable number.

234445105213 is a deficient number, since it is larger than the sum of its proper divisors (23845952511).

234445105213 is a wasteful number, since it uses less digits than its factorization.

234445105213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475196 (or 4475185 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 234445105213 its reverse (312501544432), we get a palindrome (546946649645).

The spelling of 234445105213 in words is "two hundred thirty-four billion, four hundred forty-five million, one hundred five thousand, two hundred thirteen".