231684085 has 4 divisors (see below), whose sum is σ = 278020908. Its totient is φ = 185347264.

The previous prime is 231684077. The next prime is 231684097. The reversal of 231684085 is 580486132.

It is a happy number.

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 50566321 + 181117764 = 7111^2 + 13458^2 .

It is a cyclic number.

It is not a de Polignac number, because 231684085 - 2³ = 231684077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23168404 + ... + 23168413.

It is an arithmetic number, because the mean of its divisors is an integer number (69505227).

Almost surely, 2^231684085 is an apocalyptic number.

It is an amenable number.

231684085 is a deficient number, since it is larger than the sum of its proper divisors (46336823).

231684085 is an equidigital number, since it uses as much as digits as its factorization.

231684085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46336822.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 231684085 is about 15221.1722610317. The cubic root of 231684085 is about 614.1843329947.

The spelling of 231684085 in words is "two hundred thirty-one million, six hundred eighty-four thousand, eighty-five".