231061 has 4 divisors (see below), whose sum is σ = 232300. Its totient is φ = 229824.

The previous prime is 231053. The next prime is 231067. The reversal of 231061 is 160132.

231061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152100 + 78961 = 390^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 231061 - 2³ = 231053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231067) 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, 276 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (58075).

2²³¹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

231061 is a deficient number, since it is larger than the sum of its proper divisors (1239).

231061 is a wasteful number, since it uses less digits than its factorization.

231061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231061 is about 480.6880485304. The cubic root of 231061 is about 61.3633248353.

Adding to 231061 its reverse (160132), we get a palindrome (391193).

The spelling of 231061 in words is "two hundred thirty-one thousand, sixty-one".