4000031131 has 8 divisors (see below), whose sum is σ = 4231124640. Its totient is φ = 3773702592.

The previous prime is 4000031117. The next prime is 4000031143. The reversal of 4000031131 is 1311300004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000031131 - 2⁷ = 4000031003 is a prime.

It is a super-2 number, since 2×4000031131² = 32000498097938278322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000031111) by changing a digit.

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, 1189516 + ... + 1192873.

It is an arithmetic number, because the mean of its divisors is an integer number (528890580).

Almost surely, 2^4000031131 is an apocalyptic number.

4000031131 is a deficient number, since it is larger than the sum of its proper divisors (231093509).

4000031131 is a wasteful number, since it uses less digits than its factorization.

4000031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382485.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 4000031131 is about 63245.7993150533. The cubic root of 4000031131 is about 1587.4051700727.

Adding to 4000031131 its reverse (1311300004), we get a palindrome (5311331135).

The spelling of 4000031131 in words is "four billion, thirty-one thousand, one hundred thirty-one".