242401331 has 4 divisors (see below), whose sum is σ = 244666872. Its totient is φ = 240135792.

The previous prime is 242401321. The next prime is 242401337. The reversal of 242401331 is 133104242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133104242 = 2 ⋅66552121.

It is a cyclic number.

It is not a de Polignac number, because 242401331 - 2⁶ = 242401267 is a prime.

It is a super-2 number, since 2×242401331² = 117516810541143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242401337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132610 + ... + 1132823.

It is an arithmetic number, because the mean of its divisors is an integer number (61166718).

Almost surely, 2^242401331 is an apocalyptic number.

242401331 is a deficient number, since it is larger than the sum of its proper divisors (2265541).

242401331 is a wasteful number, since it uses less digits than its factorization.

242401331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265540.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 242401331 is about 15569.2431094129. The cubic root of 242401331 is about 623.5122638893.

Adding to 242401331 its reverse (133104242), we get a palindrome (375505573).

The spelling of 242401331 in words is "two hundred forty-two million, four hundred one thousand, three hundred thirty-one".