1231031204 has 48 divisors (see below), whose sum is σ = 2520967680. Its totient is φ = 520888320.

The previous prime is 1231031203. The next prime is 1231031213. The reversal of 1231031204 is 4021301321.

It is not an unprimeable number, because it can be changed into a prime (1231031203) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10532 + ... + 50724.

It is an arithmetic number, because the mean of its divisors is an integer number (52520160).

Almost surely, 2^1231031204 is an apocalyptic number.

It is an amenable number.

1231031204 is an abundant number, since it is smaller than the sum of its proper divisors (1289936476).

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

1231031204 is a wasteful number, since it uses less digits than its factorization.

1231031204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40260 (or 40258 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1231031204 is about 35086.0542666171. The cubic root of 1231031204 is about 1071.7406100430.

Adding to 1231031204 its reverse (4021301321), we get a palindrome (5252332525).

The spelling of 1231031204 in words is "one billion, two hundred thirty-one million, thirty-one thousand, two hundred four".