231224130 has 24 divisors (see below), whose sum is σ = 601182972. Its totient is φ = 61659744.

The previous prime is 231224113. The next prime is 231224131. The reversal of 231224130 is 31422132.

231224130 is a `hidden beast` number, since 231 + 22 + 413 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 227074761 + 4149369 = 15069^2 + 2037^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (231224131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1284489 + ... + 1284668.

Almost surely, 2^231224130 is an apocalyptic number.

231224130 is an abundant number, since it is smaller than the sum of its proper divisors (369958842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231224130 is a wasteful number, since it uses less digits than its factorization.

231224130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569170 (or 2569167 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231224130 is about 15206.0557015947. The cubic root of 231224130 is about 613.7776235661. Note that the first 3 decimals are identical.

Adding to 231224130 its reverse (31422132), we get a palindrome (262646262).

The spelling of 231224130 in words is "two hundred thirty-one million, two hundred twenty-four thousand, one hundred thirty".