231073705 has 4 divisors (see below), whose sum is σ = 277288452. Its totient is φ = 184858960.

The previous prime is 231073697. The next prime is 231073723. The reversal of 231073705 is 507370132.

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 96884649 + 134189056 = 9843^2 + 11584^2 .

It is not a de Polignac number, because 231073705 - 2³ = 231073697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23107366 + ... + 23107375.

It is an arithmetic number, because the mean of its divisors is an integer number (69322113).

Almost surely, 2^231073705 is an apocalyptic number.

It is an amenable number.

231073705 is a deficient number, since it is larger than the sum of its proper divisors (46214747).

231073705 is an equidigital number, since it uses as much as digits as its factorization.

231073705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46214746.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 231073705 is about 15201.1086766722. The cubic root of 231073705 is about 613.6444951194.

The spelling of 231073705 in words is "two hundred thirty-one million, seventy-three thousand, seven hundred five".