243332223131 has 4 divisors (see below), whose sum is σ = 243518972112. Its totient is φ = 243145474152.

The previous prime is 243332223103. The next prime is 243332223161. The reversal of 243332223131 is 131322233342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243332223131 is a prime.

It is a super-2 number, since 2×243332223131² (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 = 243332223094 and 243332223103.

It is not an unprimeable number, because it can be changed into a prime (243332223161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93372536 + ... + 93375141.

It is an arithmetic number, because the mean of its divisors is an integer number (60879743028).

Almost surely, 2^243332223131 is an apocalyptic number.

243332223131 is a deficient number, since it is larger than the sum of its proper divisors (186748981).

243332223131 is a wasteful number, since it uses less digits than its factorization.

243332223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186748980.

The product of its digits is 15552, while the sum is 29.

Adding to 243332223131 its reverse (131322233342), we get a palindrome (374654456473).

The spelling of 243332223131 in words is "two hundred forty-three billion, three hundred thirty-two million, two hundred twenty-three thousand, one hundred thirty-one".