243121227383 has 2 divisors, whose sum is σ = 243121227384. Its totient is φ = 243121227382.

The previous prime is 243121227341. The next prime is 243121227403. The reversal of 243121227383 is 383722121342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243121227383 - 2²⁴ = 243104450167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243121227683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121560613691 + 121560613692.

It is an arithmetic number, because the mean of its divisors is an integer number (121560613692).

Almost surely, 2^243121227383 is an apocalyptic number.

243121227383 is a deficient number, since it is larger than the sum of its proper divisors (1).

243121227383 is an equidigital number, since it uses as much as digits as its factorization.

243121227383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

The spelling of 243121227383 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred twenty-seven thousand, three hundred eighty-three".