331242242131 has 2 divisors, whose sum is σ = 331242242132. Its totient is φ = 331242242130.

The previous prime is 331242242129. The next prime is 331242242179. The reversal of 331242242131 is 131242242133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331242242131 - 2¹ = 331242242129 is a prime.

It is a super-2 number, since 2×331242242131² (a number of 24 digits) contains 22 as substring.

Together with 331242242129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 331242242131.

It is not a weakly prime, because it can be changed into another prime (331242242531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165621121065 + 165621121066.

It is an arithmetic number, because the mean of its divisors is an integer number (165621121066).

Almost surely, 2^331242242131 is an apocalyptic number.

331242242131 is a deficient number, since it is larger than the sum of its proper divisors (1).

331242242131 is an equidigital number, since it uses as much as digits as its factorization.

331242242131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

Adding to 331242242131 its reverse (131242242133), we get a palindrome (462484484264).

The spelling of 331242242131 in words is "three hundred thirty-one billion, two hundred forty-two million, two hundred forty-two thousand, one hundred thirty-one".