378313 has 4 divisors (see below), whose sum is σ = 407428. Its totient is φ = 349200.

The previous prime is 378289. The next prime is 378317. The reversal of 378313 is 313873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313873 = 7 ⋅44839.

It can be written as a sum of positive squares in 2 ways, for example, as 21904 + 356409 = 148^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 378313 - 2⁹ = 377801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14538 + ... + 14563.

It is an arithmetic number, because the mean of its divisors is an integer number (101857).

2³⁷⁸³¹³ is an apocalyptic number.

It is an amenable number.

378313 is a deficient number, since it is larger than the sum of its proper divisors (29115).

378313 is a wasteful number, since it uses less digits than its factorization.

378313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29114.

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

The square root of 378313 is about 615.0715405544. The cubic root of 378313 is about 72.3242194175.

The spelling of 378313 in words is "three hundred seventy-eight thousand, three hundred thirteen".