231215386585 has 16 divisors (see below), whose sum is σ = 299505392640. Its totient is φ = 170828996800.

The previous prime is 231215386583. The next prime is 231215386613. The reversal of 231215386585 is 585683512132.

It is not a de Polignac number, because 231215386585 - 2¹ = 231215386583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231215386583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34661641 + ... + 34668310.

It is an arithmetic number, because the mean of its divisors is an integer number (18719087040).

Almost surely, 2^231215386585 is an apocalyptic number.

It is an amenable number.

231215386585 is a deficient number, since it is larger than the sum of its proper divisors (68290006055).

231215386585 is a wasteful number, since it uses less digits than its factorization.

231215386585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69330008.

The product of its digits is 1728000, while the sum is 49.

The spelling of 231215386585 in words is "two hundred thirty-one billion, two hundred fifteen million, three hundred eighty-six thousand, five hundred eighty-five".