242015311 has 4 divisors (see below), whose sum is σ = 242202352. Its totient is φ = 241828272.

The previous prime is 242015299. The next prime is 242015317. The reversal of 242015311 is 113510242.

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

It is a cyclic number.

It is not a de Polignac number, because 242015311 - 2¹³ = 242007119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242015317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91566 + ... + 94171.

It is an arithmetic number, because the mean of its divisors is an integer number (60550588).

Almost surely, 2^242015311 is an apocalyptic number.

242015311 is a deficient number, since it is larger than the sum of its proper divisors (187041).

242015311 is a wasteful number, since it uses less digits than its factorization.

242015311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187040.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 242015311 is about 15556.8412924989. The cubic root of 242015311 is about 623.1811104804.

Adding to 242015311 its reverse (113510242), we get a palindrome (355525553).

The spelling of 242015311 in words is "two hundred forty-two million, fifteen thousand, three hundred eleven".