243212134331 has 8 divisors (see below), whose sum is σ = 256018025280. Its totient is φ = 230406768648.

The previous prime is 243212134303. The next prime is 243212134337. The reversal of 243212134331 is 133431212342.

243212134331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243212134331 is a prime.

It is a super-2 number, since 2×243212134331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243212134294 and 243212134303.

It is not an unprimeable number, because it can be changed into a prime (243212134337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129700 + ... + 1327646.

It is an arithmetic number, because the mean of its divisors is an integer number (32002253160).

Almost surely, 2^243212134331 is an apocalyptic number.

243212134331 is a deficient number, since it is larger than the sum of its proper divisors (12805890949).

243212134331 is a wasteful number, since it uses less digits than its factorization.

243212134331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262633.

The product of its digits is 10368, while the sum is 29.

Adding to 243212134331 its reverse (133431212342), we get a palindrome (376643346673).

The spelling of 243212134331 in words is "two hundred forty-three billion, two hundred twelve million, one hundred thirty-four thousand, three hundred thirty-one".