20004031004 has 12 divisors (see below), whose sum is σ = 35016237984. Its totient is φ = 9999391584.

The previous prime is 20004030983. The next prime is 20004031043. The reversal of 20004031004 is 40013040002.

It is a super-2 number, since 2×20004031004² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20004031004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638777 + ... + 669360.

It is an arithmetic number, because the mean of its divisors is an integer number (2918019832).

Almost surely, 2^20004031004 is an apocalyptic number.

It is an amenable number.

20004031004 is a deficient number, since it is larger than the sum of its proper divisors (15012206980).

20004031004 is a wasteful number, since it uses less digits than its factorization.

20004031004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311964 (or 1311962 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20004031004 its reverse (40013040002), we get a palindrome (60017071006).

The spelling of 20004031004 in words is "twenty billion, four million, thirty-one thousand, four".