243310213243 has 16 divisors (see below), whose sum is σ = 259786240000. Its totient is φ = 227210847552.

The previous prime is 243310213213. The next prime is 243310213261. The reversal of 243310213243 is 342312013342.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 243310213243 - 2²⁵ = 243276658811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243310213213) 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, 777583 + ... + 1044631.

It is an arithmetic number, because the mean of its divisors is an integer number (16236640000).

Almost surely, 2^243310213243 is an apocalyptic number.

243310213243 is a deficient number, since it is larger than the sum of its proper divisors (16476026757).

243310213243 is a wasteful number, since it uses less digits than its factorization.

243310213243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267754.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 243310213243 its reverse (342312013342), we get a palindrome (585622226585).

The spelling of 243310213243 in words is "two hundred forty-three billion, three hundred ten million, two hundred thirteen thousand, two hundred forty-three".