20131243000404 has 24 divisors (see below), whose sum is σ = 47403844377120. Its totient is φ = 6648850898784.

The previous prime is 20131243000403. The next prime is 20131243000409. The reversal of 20131243000404 is 40400034213102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131243000403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7695427974 + ... + 7695430589.

It is an arithmetic number, because the mean of its divisors is an integer number (1975160182380).

Almost surely, 2^{20131243000404} is an apocalyptic number.

It is an amenable number.

20131243000404 is an abundant number, since it is smaller than the sum of its proper divisors (27272601376716).

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

20131243000404 is a wasteful number, since it uses less digits than its factorization.

20131243000404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390858679 (or 15390858677 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20131243000404 its reverse (40400034213102), we get a palindrome (60531277213506).

The spelling of 20131243000404 in words is "twenty trillion, one hundred thirty-one billion, two hundred forty-three million, four hundred four", and thus it is an aban number.