242011331 has 2 divisors, whose sum is σ = 242011332. Its totient is φ = 242011330.

The previous prime is 242011307. The next prime is 242011387. The reversal of 242011331 is 133110242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242011331 is a prime.

It is a super-3 number, since 3×242011331³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (242011391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121005665 + 121005666.

It is an arithmetic number, because the mean of its divisors is an integer number (121005666).

Almost surely, 2^242011331 is an apocalyptic number.

242011331 is a deficient number, since it is larger than the sum of its proper divisors (1).

242011331 is an equidigital number, since it uses as much as digits as its factorization.

242011331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 242011331 is about 15556.7133739746. The cubic root of 242011331 is about 623.1776943406.

Adding to 242011331 its reverse (133110242), we get a palindrome (375121573).

The spelling of 242011331 in words is "two hundred forty-two million, eleven thousand, three hundred thirty-one".