231020 has 12 divisors (see below), whose sum is σ = 485184. Its totient is φ = 92400.

The previous prime is 231019. The next prime is 231031. The reversal of 231020 is 20132.

231020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 230989 and 231007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5756 + ... + 5795.

It is an arithmetic number, because the mean of its divisors is an integer number (40432).

2²³¹⁰²⁰ is an apocalyptic number.

231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231020 is an abundant number, since it is smaller than the sum of its proper divisors (254164).

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

231020 is a wasteful number, since it uses less digits than its factorization.

231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560 (or 11558 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 231020 is about 480.6453994370. The cubic root of 231020 is about 61.3596951370.

Adding to 231020 its reverse (20132), we get a palindrome (251152).

The spelling of 231020 in words is "two hundred thirty-one thousand, twenty".