1231404043024 has 40 divisors (see below), whose sum is σ = 2451280786560. Its totient is φ = 598828399488.

The previous prime is 1231404043021. The next prime is 1231404043057. The reversal of 1231404043024 is 4203404041321.

It is a junction number, because it is equal to n+sod(n) for n = 1231404042983 and 1231404043001.

It is not an unprimeable number, because it can be changed into a prime (1231404043021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123497 + ... + 1930039.

It is an arithmetic number, because the mean of its divisors is an integer number (61282019664).

Almost surely, 2^{1231404043024} is an apocalyptic number.

It is an amenable number.

1231404043024 is a deficient number, since it is larger than the sum of its proper divisors (1219876743536).

1231404043024 is a wasteful number, since it uses less digits than its factorization.

1231404043024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809167 (or 809161 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1231404043024 its reverse (4203404041321), we get a palindrome (5434808084345).

The spelling of 1231404043024 in words is "one trillion, two hundred thirty-one billion, four hundred four million, forty-three thousand, twenty-four".