231598 has 8 divisors (see below), whose sum is σ = 355608. Its totient is φ = 113064.

The previous prime is 231589. The next prime is 231599. The reversal of 231598 is 895132.

231598 is digitally balanced in base 2, 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 an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231599) by changing a digit.

231598 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, 1261 + ... + 1432.

It is an arithmetic number, because the mean of its divisors is an integer number (44451).

2²³¹⁵⁹⁸ is an apocalyptic number.

231598 is a deficient number, since it is larger than the sum of its proper divisors (124010).

231598 is a wasteful number, since it uses less digits than its factorization.

231598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738.

The product of its digits is 2160, while the sum is 28.

The square root of 231598 is about 481.2462986871. The cubic root of 231598 is about 61.4108254387.

The spelling of 231598 in words is "two hundred thirty-one thousand, five hundred ninety-eight".