20110312004 has 12 divisors (see below), whose sum is σ = 35280812028. Its totient is φ = 10030080000.

The previous prime is 20110311983. The next prime is 20110312009. The reversal of 20110312004 is 40021301102.

It can be written as a sum of positive squares in 2 ways, for example, as 19675672900 + 434639104 = 140270^2 + 20848^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20110312004.

It is not an unprimeable number, because it can be changed into a prime (20110312009) 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, 6267197 + ... + 6270404.

It is an arithmetic number, because the mean of its divisors is an integer number (2940067669).

Almost surely, 2^20110312004 is an apocalyptic number.

It is an amenable number.

20110312004 is a deficient number, since it is larger than the sum of its proper divisors (15170500024).

20110312004 is a wasteful number, since it uses less digits than its factorization.

20110312004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538006 (or 12538004 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20110312004 its reverse (40021301102), we get a palindrome (60131613106).

The spelling of 20110312004 in words is "twenty billion, one hundred ten million, three hundred twelve thousand, four".