331402442 has 16 divisors (see below), whose sum is σ = 568804992. Its totient is φ = 141858000.

The previous prime is 331402441. The next prime is 331402453. The reversal of 331402442 is 244204133.

It is not an unprimeable number, because it can be changed into a prime (331402441) by changing a digit.

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, 1934 + ... + 25817.

It is an arithmetic number, because the mean of its divisors is an integer number (35550312).

Almost surely, 2^331402442 is an apocalyptic number.

331402442 is a deficient number, since it is larger than the sum of its proper divisors (237402550).

331402442 is a wasteful number, since it uses less digits than its factorization.

331402442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28613.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 331402442 is about 18204.4621453093. The cubic root of 331402442 is about 692.0198756361.

Adding to 331402442 its reverse (244204133), we get a palindrome (575606575).

The spelling of 331402442 in words is "three hundred thirty-one million, four hundred two thousand, four hundred forty-two".