231765073 has 4 divisors (see below), whose sum is σ = 231812260. Its totient is φ = 231717888.

The previous prime is 231765067. The next prime is 231765091. The reversal of 231765073 is 370567132.

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 164147344 + 67617729 = 12812^2 + 8223^2 .

It is a cyclic number.

It is not a de Polignac number, because 231765073 - 2¹³ = 231756881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231765673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15240 + ... + 26377.

It is an arithmetic number, because the mean of its divisors is an integer number (57953065).

Almost surely, 2^231765073 is an apocalyptic number.

It is an amenable number.

231765073 is a deficient number, since it is larger than the sum of its proper divisors (47187).

231765073 is an equidigital number, since it uses as much as digits as its factorization.

231765073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47186.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 231765073 is about 15223.8324018625. The cubic root of 231765073 is about 614.2558898678.

The spelling of 231765073 in words is "two hundred thirty-one million, seven hundred sixty-five thousand, seventy-three".