1231040424 has 16 divisors (see below), whose sum is σ = 3077601120. Its totient is φ = 410346800.

The previous prime is 1231040417. The next prime is 1231040429. The reversal of 1231040424 is 4240401321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231040424.

It is not an unprimeable number, because it can be changed into a prime (1231040429) 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, 25646652 + ... + 25646699.

It is an arithmetic number, because the mean of its divisors is an integer number (192350070).

Almost surely, 2^1231040424 is an apocalyptic number.

It is an amenable number.

1231040424 is an abundant number, since it is smaller than the sum of its proper divisors (1846560696).

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

1231040424 is a wasteful number, since it uses less digits than its factorization.

1231040424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51293360 (or 51293356 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1231040424 is about 35086.1856576060. The cubic root of 1231040424 is about 1071.7432856924.

Adding to 1231040424 its reverse (4240401321), we get a palindrome (5471441745).

The spelling of 1231040424 in words is "one billion, two hundred thirty-one million, forty thousand, four hundred twenty-four".