20131204004 has 12 divisors (see below), whose sum is σ = 35310971724. Its totient is φ = 10042354944.

The previous prime is 20131204001. The next prime is 20131204013. The reversal of 20131204004 is 40040213102.

It can be written as a sum of positive squares in 2 ways, for example, as 1045228900 + 19085975104 = 32330^2 + 138152^2 .

It is not an unprimeable number, because it can be changed into a prime (20131204001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5809817 + ... + 5813280.

It is an arithmetic number, because the mean of its divisors is an integer number (2942580977).

Almost surely, 2^20131204004 is an apocalyptic number.

It is an amenable number.

20131204004 is a deficient number, since it is larger than the sum of its proper divisors (15179767720).

20131204004 is a wasteful number, since it uses less digits than its factorization.

20131204004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11623534 (or 11623532 counting only the distinct ones).

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

Adding to 20131204004 its reverse (40040213102), we get a palindrome (60171417106).

The spelling of 20131204004 in words is "twenty billion, one hundred thirty-one million, two hundred four thousand, four".