331403442 has 8 divisors (see below), whose sum is σ = 662806896. Its totient is φ = 110467812.

The previous prime is 331403437. The next prime is 331403459. The reversal of 331403442 is 244304133.

It is a sphenic number, since it is the product of 3 distinct primes.

331403442 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27616948 + ... + 27616959.

It is an arithmetic number, because the mean of its divisors is an integer number (82850862).

Almost surely, 2^331403442 is an apocalyptic number.

331403442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331403442 is a wasteful number, since it uses less digits than its factorization.

331403442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55233912.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 331403442 is about 18204.4896110822. The cubic root of 331403442 is about 692.0205716873.

Adding to 331403442 its reverse (244304133), we get a palindrome (575707575).

The spelling of 331403442 in words is "three hundred thirty-one million, four hundred three thousand, four hundred forty-two".