4000631131332 has 144 divisors (see below), whose sum is σ = 11743158772800. Its totient is φ = 1135601786880.

The previous prime is 4000631131319. The next prime is 4000631131369. The reversal of 4000631131332 is 2331311360004.

4000631131332 is a `hidden beast` number, since 4 + 0 + 0 + 0 + 6 + 311 + 313 + 32 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4000631131296 and 4000631131305.

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 47 ways as a sum of consecutive naturals, for example, 2317533 + ... + 3656804.

It is an arithmetic number, because the mean of its divisors is an integer number (81549713700).

Almost surely, 2^{4000631131332} is an apocalyptic number.

It is an amenable number.

4000631131332 is an abundant number, since it is smaller than the sum of its proper divisors (7742527641468).

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

4000631131332 is a wasteful number, since it uses less digits than its factorization.

4000631131332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5974466 (or 5974461 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 4000631131332 its reverse (2331311360004), we get a palindrome (6331942491336).

The spelling of 4000631131332 in words is "four trillion, six hundred thirty-one million, one hundred thirty-one thousand, three hundred thirty-two".