242340031 has 4 divisors (see below), whose sum is σ = 242556952. Its totient is φ = 242123112.

The previous prime is 242340013. The next prime is 242340067. The reversal of 242340031 is 130043242.

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 242340031 - 2¹¹ = 242337983 is a prime.

It is a super-2 number, since 2×242340031² = 117457381250161922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242339990 and 242340008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242341031) 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, 106776 + ... + 109021.

It is an arithmetic number, because the mean of its divisors is an integer number (60639238).

Almost surely, 2^242340031 is an apocalyptic number.

242340031 is a deficient number, since it is larger than the sum of its proper divisors (216921).

242340031 is a wasteful number, since it uses less digits than its factorization.

242340031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216920.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 242340031 is about 15567.2743600156. The cubic root of 242340031 is about 623.4597002009.

Adding to 242340031 its reverse (130043242), we get a palindrome (372383273).

The spelling of 242340031 in words is "two hundred forty-two million, three hundred forty thousand, thirty-one".