231378 has 24 divisors (see below), whose sum is σ = 538992. Its totient is φ = 66024.

The previous prime is 231367. The next prime is 231379. The reversal of 231378 is 873132.

231378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (231379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100 + ... + 687.

It is an arithmetic number, because the mean of its divisors is an integer number (22458).

2²³¹³⁷⁸ is an apocalyptic number.

231378 is an abundant number, since it is smaller than the sum of its proper divisors (307614).

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

231378 is a wasteful number, since it uses less digits than its factorization.

231378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 799 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 231378 is about 481.0176711931. The cubic root of 231378 is about 61.3913741167.

The spelling of 231378 in words is "two hundred thirty-one thousand, three hundred seventy-eight".