242331031 has 2 divisors, whose sum is σ = 242331032. Its totient is φ = 242331030.

The previous prime is 242331029. The next prime is 242331083. The reversal of 242331031 is 130133242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242331031 - 2¹ = 242331029 is a prime.

It is a super-2 number, since 2×242331031² = 117448657171045922, which contains 22 as substring.

Together with 242331029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242331091) 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 as a sum of consecutive naturals, namely, 121165515 + 121165516.

It is an arithmetic number, because the mean of its divisors is an integer number (121165516).

Almost surely, 2^242331031 is an apocalyptic number.

242331031 is a deficient number, since it is larger than the sum of its proper divisors (1).

242331031 is an equidigital number, since it uses as much as digits as its factorization.

242331031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 242331031 is about 15566.9852893873. The cubic root of 242331031 is about 623.4519821105.

Adding to 242331031 its reverse (130133242), we get a palindrome (372464273).

The spelling of 242331031 in words is "two hundred forty-two million, three hundred thirty-one thousand, thirty-one".