231228584 has 8 divisors (see below), whose sum is σ = 433553610. Its totient is φ = 115614288.

The previous prime is 231228583. The next prime is 231228601. The reversal of 231228584 is 485822132.

It can be written as a sum of positive squares in only one way, i.e., 210888484 + 20340100 = 14522^2 + 4510^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (231228581) by changing a digit.

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 as a sum of consecutive naturals, namely, 14451779 + ... + 14451794.

Almost surely, 2^231228584 is an apocalyptic number.

It is an amenable number.

231228584 is a deficient number, since it is larger than the sum of its proper divisors (202325026).

231228584 is a wasteful number, since it uses less digits than its factorization.

231228584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28903579 (or 28903575 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 231228584 is about 15206.2021556995. The cubic root of 231228584 is about 613.7815645446.

The spelling of 231228584 in words is "two hundred thirty-one million, two hundred twenty-eight thousand, five hundred eighty-four".