231073 has 4 divisors (see below), whose sum is σ = 232128. Its totient is φ = 230020.

The previous prime is 231067. The next prime is 231079. The reversal of 231073 is 370132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (231067) and next prime (231079).

It is a cyclic number.

It is not a de Polignac number, because 231073 - 2⁵ = 231041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231079) 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, 61 + ... + 682.

It is an arithmetic number, because the mean of its divisors is an integer number (58032).

2²³¹⁰⁷³ is an apocalyptic number.

It is an amenable number.

231073 is a deficient number, since it is larger than the sum of its proper divisors (1055).

231073 is an equidigital number, since it uses as much as digits as its factorization.

231073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 231073 is about 480.7005304761. The cubic root of 231073 is about 61.3643871048.

The spelling of 231073 in words is "two hundred thirty-one thousand, seventy-three".