331146242 has 16 divisors (see below), whose sum is σ = 571492800. Its totient is φ = 140966448.

The previous prime is 331146239. The next prime is 331146287. The reversal of 331146242 is 242641133.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 77288 + ... + 81459.

It is an arithmetic number, because the mean of its divisors is an integer number (35718300).

Almost surely, 2^331146242 is an apocalyptic number.

331146242 is a deficient number, since it is larger than the sum of its proper divisors (240346558).

331146242 is a wasteful number, since it uses less digits than its factorization.

331146242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158905.

The product of its digits is 3456, while the sum is 26.

The square root of 331146242 is about 18197.4240484746. The cubic root of 331146242 is about 691.8415011715.

Adding to 331146242 its reverse (242641133), we get a palindrome (573787375).

The spelling of 331146242 in words is "three hundred thirty-one million, one hundred forty-six thousand, two hundred forty-two".