242815311 has 12 divisors (see below), whose sum is σ = 351797160. Its totient is φ = 161385840.

The previous prime is 242815297. The next prime is 242815333. The reversal of 242815311 is 113518242.

It is not a de Polignac number, because 242815311 - 2⁶ = 242815247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242815351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37776 + ... + 43733.

It is an arithmetic number, because the mean of its divisors is an integer number (29316430).

Almost surely, 2^242815311 is an apocalyptic number.

242815311 is a deficient number, since it is larger than the sum of its proper divisors (108981849).

242815311 is a wasteful number, since it uses less digits than its factorization.

242815311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81846 (or 81843 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 242815311 is about 15582.5322396586. The cubic root of 242815311 is about 623.8670127716.

It can be divided in two parts, 24281 and 5311, that added together give a palindrome (29592).

The spelling of 242815311 in words is "two hundred forty-two million, eight hundred fifteen thousand, three hundred eleven".