1231042004 has 12 divisors (see below), whose sum is σ = 2154901728. Its totient is φ = 615355800.

The previous prime is 1231041991. The next prime is 1231042027. The reversal of 1231042004 is 4002401321.

It is a super-2 number, since 2×1231042004² = 3030928831224672032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 23702 + ... + 54989.

It is an arithmetic number, because the mean of its divisors is an integer number (179575144).

Almost surely, 2^1231042004 is an apocalyptic number.

It is an amenable number.

1231042004 is a deficient number, since it is larger than the sum of its proper divisors (923859724).

1231042004 is a wasteful number, since it uses less digits than its factorization.

1231042004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82606 (or 82604 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1231042004 is about 35086.2081735830. The cubic root of 1231042004 is about 1071.7437442080.

Adding to 1231042004 its reverse (4002401321), we get a palindrome (5233443325).

The spelling of 1231042004 in words is "one billion, two hundred thirty-one million, forty-two thousand, four".