231585830 has 16 divisors (see below), whose sum is σ = 476405280. Its totient is φ = 79400832.

The previous prime is 231585821. The next prime is 231585847. The reversal of 231585830 is 38585132.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654115 + ... + 1654254.

It is an arithmetic number, because the mean of its divisors is an integer number (29775330).

Almost surely, 2^231585830 is an apocalyptic number.

231585830 is an abundant number, since it is smaller than the sum of its proper divisors (244819450).

231585830 is a wasteful number, since it uses less digits than its factorization.

231585830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308383.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 231585830 is about 15217.9443421245. The cubic root of 231585830 is about 614.0974974884.

The spelling of 231585830 in words is "two hundred thirty-one million, five hundred eighty-five thousand, eight hundred thirty".