243240022302331 has 2 divisors, whose sum is σ = 243240022302332. Its totient is φ = 243240022302330.

The previous prime is 243240022302293. The next prime is 243240022302341. The reversal of 243240022302331 is 133203220042342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243240022302331 is a prime.

It is a super-2 number, since 2×243240022302331² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243240022302293 and 243240022302302.

It is not a weakly prime, because it can be changed into another prime (243240022302341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121620011151165 + 121620011151166.

It is an arithmetic number, because the mean of its divisors is an integer number (121620011151166).

Almost surely, 2^{243240022302331} is an apocalyptic number.

243240022302331 is a deficient number, since it is larger than the sum of its proper divisors (1).

243240022302331 is an equidigital number, since it uses as much as digits as its factorization.

243240022302331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 243240022302331 its reverse (133203220042342), we get a palindrome (376443242344673).

The spelling of 243240022302331 in words is "two hundred forty-three trillion, two hundred forty billion, twenty-two million, three hundred two thousand, three hundred thirty-one".