242211311 has 2 divisors, whose sum is σ = 242211312. Its totient is φ = 242211310.

The previous prime is 242211251. The next prime is 242211323. The reversal of 242211311 is 113112242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242211311 - 2⁶ = 242211247 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242211311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242211341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121105655 + 121105656.

It is an arithmetic number, because the mean of its divisors is an integer number (121105656).

Almost surely, 2^242211311 is an apocalyptic number.

242211311 is a deficient number, since it is larger than the sum of its proper divisors (1).

242211311 is an equidigital number, since it uses as much as digits as its factorization.

242211311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 242211311 is about 15563.1394969010. The cubic root of 242211311 is about 623.3492961745.

Adding to 242211311 its reverse (113112242), we get a palindrome (355323553).

The spelling of 242211311 in words is "two hundred forty-two million, two hundred eleven thousand, three hundred eleven".