231346705 has 4 divisors (see below), whose sum is σ = 277616052. Its totient is φ = 185077360.

The previous prime is 231346697. The next prime is 231346741. The reversal of 231346705 is 507643132.

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 54110736 + 177235969 = 7356^2 + 13313^2 .

It is not a de Polignac number, because 231346705 - 2³ = 231346697 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23134666 + ... + 23134675.

It is an arithmetic number, because the mean of its divisors is an integer number (69404013).

Almost surely, 2^231346705 is an apocalyptic number.

It is an amenable number.

231346705 is a deficient number, since it is larger than the sum of its proper divisors (46269347).

231346705 is an equidigital number, since it uses as much as digits as its factorization.

231346705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46269346.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 231346705 is about 15210.0856342100. The cubic root of 231346705 is about 613.8860616459.

Adding to 231346705 its reverse (507643132), we get a palindrome (738989837).

The spelling of 231346705 in words is "two hundred thirty-one million, three hundred forty-six thousand, seven hundred five".