20040331131204 has 48 divisors (see below), whose sum is σ = 48801294702720. Its totient is φ = 6392684193280.

The previous prime is 20040331131187. The next prime is 20040331131241. The reversal of 20040331131204 is 40213113304002.

It is a happy number.

It is a super-2 number, since 2×20040331131204² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254771112 + ... + 254849759.

It is an arithmetic number, because the mean of its divisors is an integer number (1016693639640).

Almost surely, 2^{20040331131204} is an apocalyptic number.

It is an amenable number.

20040331131204 is an abundant number, since it is smaller than the sum of its proper divisors (28760963571516).

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

20040331131204 is a wasteful number, since it uses less digits than its factorization.

20040331131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509621020 (or 509621018 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20040331131204 its reverse (40213113304002), we get a palindrome (60253444435206).

The spelling of 20040331131204 in words is "twenty trillion, forty billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred four".