231409844 has 12 divisors (see below), whose sum is σ = 411606468. Its totient is φ = 113808000.

The previous prime is 231409799. The next prime is 231409847. The reversal of 231409844 is 448904132.

It can be written as a sum of positive squares in 2 ways, for example, as 7907344 + 223502500 = 2812^2 + 14950^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231409847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473957 + ... + 474444.

It is an arithmetic number, because the mean of its divisors is an integer number (34300539).

Almost surely, 2^231409844 is an apocalyptic number.

It is an amenable number.

231409844 is a deficient number, since it is larger than the sum of its proper divisors (180196624).

231409844 is a wasteful number, since it uses less digits than its factorization.

231409844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948466 (or 948464 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 231409844 is about 15212.1610562076. The cubic root of 231409844 is about 613.9419037011.

The spelling of 231409844 in words is "two hundred thirty-one million, four hundred nine thousand, eight hundred forty-four".