20131040404 has 24 divisors (see below), whose sum is σ = 35315463456. Its totient is φ = 10040940000.

The previous prime is 20131040387. The next prime is 20131040411. The reversal of 20131040404 is 40404013102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3280419 + ... + 3286549.

It is an arithmetic number, because the mean of its divisors is an integer number (1471477644).

Almost surely, 2^20131040404 is an apocalyptic number.

It is an amenable number.

20131040404 is a deficient number, since it is larger than the sum of its proper divisors (15184423052).

20131040404 is a wasteful number, since it uses less digits than its factorization.

20131040404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8007 (or 8005 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20131040404 its reverse (40404013102), we get a palindrome (60535053506).

The spelling of 20131040404 in words is "twenty billion, one hundred thirty-one million, forty thousand, four hundred four".