331430242 has 16 divisors (see below), whose sum is σ = 584059392. Its totient is φ = 139061520.

The previous prime is 331430237. The next prime is 331430251. The reversal of 331430242 is 242034133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 579138 + ... + 579709.

It is an arithmetic number, because the mean of its divisors is an integer number (36503712).

Almost surely, 2^331430242 is an apocalyptic number.

331430242 is a deficient number, since it is larger than the sum of its proper divisors (252629150).

331430242 is a wasteful number, since it uses less digits than its factorization.

331430242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158873.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 331430242 is about 18205.2256783595. The cubic root of 331430242 is about 692.0392253373.

Adding to 331430242 its reverse (242034133), we get a palindrome (573464375).

The spelling of 331430242 in words is "three hundred thirty-one million, four hundred thirty thousand, two hundred forty-two".