331378 has 8 divisors (see below), whose sum is σ = 499968. Its totient is φ = 164724.

The previous prime is 331369. The next prime is 331391. The reversal of 331378 is 873133.

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

It is a super-2 number, since 2×331378² = 219622757768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

331378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75 + ... + 817.

It is an arithmetic number, because the mean of its divisors is an integer number (62496).

2³³¹³⁷⁸ is an apocalyptic number.

331378 is a deficient number, since it is larger than the sum of its proper divisors (168590).

331378 is a wasteful number, since it uses less digits than its factorization.

331378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 1512, while the sum is 25.

The square root of 331378 is about 575.6544102150. The cubic root of 331378 is about 69.2002862318.

The spelling of 331378 in words is "three hundred thirty-one thousand, three hundred seventy-eight".