378031 has 4 divisors (see below), whose sum is σ = 381672. Its totient is φ = 374392.

The previous prime is 378023. The next prime is 378041. The reversal of 378031 is 130873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378031 - 2³ = 378023 is a prime.

It is a super-2 number, since 2×378031² = 285814873922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 377993 and 378011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660 + ... + 1873.

It is an arithmetic number, because the mean of its divisors is an integer number (95418).

2³⁷⁸⁰³¹ is an apocalyptic number.

378031 is a deficient number, since it is larger than the sum of its proper divisors (3641).

378031 is a wasteful number, since it uses less digits than its factorization.

378031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 378031 is about 614.8422561926. The cubic root of 378031 is about 72.3062444429.

The spelling of 378031 in words is "three hundred seventy-eight thousand, thirty-one".