1240230231 has 16 divisors (see below), whose sum is σ = 1854239200. Its totient is φ = 819232704.

The previous prime is 1240230227. The next prime is 1240230241. The reversal of 1240230231 is 1320320421.

1240230231 is a `hidden beast` number, since 1 + 2 + 402 + 30 + 231 = 666.

It is not a de Polignac number, because 1240230231 - 2² = 1240230227 is a prime.

It is a super-2 number, since 2×1240230231² = 3076342051772626722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240230221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207766 + ... + 213651.

It is an arithmetic number, because the mean of its divisors is an integer number (115889950).

Almost surely, 2^1240230231 is an apocalyptic number.

1240230231 is a deficient number, since it is larger than the sum of its proper divisors (614008969).

1240230231 is a wasteful number, since it uses less digits than its factorization.

1240230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421535 (or 421529 counting only the distinct ones).

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

The square root of 1240230231 is about 35216.9026321169. The cubic root of 1240230231 is about 1074.4035576534.

Adding to 1240230231 its reverse (1320320421), we get a palindrome (2560550652).

The spelling of 1240230231 in words is "one billion, two hundred forty million, two hundred thirty thousand, two hundred thirty-one".