231898 has 8 divisors (see below), whose sum is σ = 355392. Its totient is φ = 113436.

The previous prime is 231893. The next prime is 231901. The reversal of 231898 is 898132.

231898 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (231893) 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, 1140 + ... + 1327.

It is an arithmetic number, because the mean of its divisors is an integer number (44424).

2²³¹⁸⁹⁸ is an apocalyptic number.

231898 is a deficient number, since it is larger than the sum of its proper divisors (123494).

231898 is a wasteful number, since it uses less digits than its factorization.

231898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516.

The product of its digits is 3456, while the sum is 31.

The square root of 231898 is about 481.5578885243. The cubic root of 231898 is about 61.4373301271.

The spelling of 231898 in words is "two hundred thirty-one thousand, eight hundred ninety-eight".