20040331131402 has 8 divisors (see below), whose sum is σ = 40080662262816. Its totient is φ = 6680110377132.

The previous prime is 20040331131397. The next prime is 20040331131409. The reversal of 20040331131402 is 20413113304002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

20040331131402 is an admirable number.

It is a super-2 number, since 2×20040331131402² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20040331131409) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1670027594278 + ... + 1670027594289.

It is an arithmetic number, because the mean of its divisors is an integer number (5010082782852).

Almost surely, 2^{20040331131402} is an apocalyptic number.

20040331131402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20040331131402 is a wasteful number, since it uses less digits than its factorization.

20040331131402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340055188572.

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

Adding to 20040331131402 its reverse (20413113304002), we get a palindrome (40453444435404).

The spelling of 20040331131402 in words is "twenty trillion, forty billion, three hundred thirty-one million, one hundred thirty-one thousand, four hundred two".