331131442 has 8 divisors (see below), whose sum is σ = 502278300. Its totient is φ = 163705344.

The previous prime is 331131421. The next prime is 331131461. The reversal of 331131442 is 244131133.

It can be written as a sum of positive squares in 2 ways, for example, as 273538521 + 57592921 = 16539^2 + 7589^2 .

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

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, 929967 + ... + 930322.

Almost surely, 2^331131442 is an apocalyptic number.

331131442 is a deficient number, since it is larger than the sum of its proper divisors (171146858).

331131442 is a wasteful number, since it uses less digits than its factorization.

331131442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860380.

The product of its digits is 864, while the sum is 22.

The square root of 331131442 is about 18197.0173929686. The cubic root of 331131442 is about 691.8311941375.

Adding to 331131442 its reverse (244131133), we get a palindrome (575262575).

The spelling of 331131442 in words is "three hundred thirty-one million, one hundred thirty-one thousand, four hundred forty-two".