1231231504 has 20 divisors (see below), whose sum is σ = 2398696300. Its totient is φ = 612213120.

The previous prime is 1231231489. The next prime is 1231231531. The reversal of 1231231504 is 4051321321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30470400 + 1200761104 = 5520^2 + 34652^2 .

It is a super-3 number, since 3×1231231504³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209679 + ... + 215470.

It is an arithmetic number, because the mean of its divisors is an integer number (119934815).

Almost surely, 2^1231231504 is an apocalyptic number.

It is an amenable number.

1231231504 is a deficient number, since it is larger than the sum of its proper divisors (1167464796).

1231231504 is a wasteful number, since it uses less digits than its factorization.

1231231504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425338 (or 425332 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1231231504 is about 35088.9085609684. The cubic root of 1231231504 is about 1071.7987342133.

Adding to 1231231504 its reverse (4051321321), we get a palindrome (5282552825).

The spelling of 1231231504 in words is "one billion, two hundred thirty-one million, two hundred thirty-one thousand, five hundred four".