242938331 has 2 divisors, whose sum is σ = 242938332. Its totient is φ = 242938330.

The previous prime is 242938327. The next prime is 242938369. The reversal of 242938331 is 133839242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242938331 - 2² = 242938327 is a prime.

It is a super-2 number, since 2×242938331² = 118038065338131122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 242938291 and 242938300.

It is not a weakly prime, because it can be changed into another prime (242938301) 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 as a sum of consecutive naturals, namely, 121469165 + 121469166.

It is an arithmetic number, because the mean of its divisors is an integer number (121469166).

Almost surely, 2^242938331 is an apocalyptic number.

242938331 is a deficient number, since it is larger than the sum of its proper divisors (1).

242938331 is an equidigital number, since it uses as much as digits as its factorization.

242938331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 242938331 is about 15586.4791085094. The cubic root of 242938331 is about 623.9723536883.

The spelling of 242938331 in words is "two hundred forty-two million, nine hundred thirty-eight thousand, three hundred thirty-one".