231073273 has 4 divisors (see below), whose sum is σ = 231110820. Its totient is φ = 231035728.

The previous prime is 231073267. The next prime is 231073289. The reversal of 231073273 is 372370132.

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 87385104 + 143688169 = 9348^2 + 11987^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231073273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231173273) 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, 7138 + ... + 22651.

It is an arithmetic number, because the mean of its divisors is an integer number (57777705).

Almost surely, 2^231073273 is an apocalyptic number.

It is an amenable number.

231073273 is a deficient number, since it is larger than the sum of its proper divisors (37547).

231073273 is an equidigital number, since it uses as much as digits as its factorization.

231073273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37546.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 231073273 is about 15201.0944671757. The cubic root of 231073273 is about 613.6441127096.

It can be divided in two parts, 23 and 1073273, that added together give a square (1073296 = 1036²).

The spelling of 231073273 in words is "two hundred thirty-one million, seventy-three thousand, two hundred seventy-three".