40043331131 has 4 divisors (see below), whose sum is σ = 41784345552. Its totient is φ = 38302316712.

The previous prime is 40043331091. The next prime is 40043331149. The reversal of 40043331131 is 13113334004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40043331131 is a prime.

It is a super-2 number, since 2×40043331131² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1741014397 = 40043331131 / (4 + 0 + 0 + 4 + 3 + 3 + 3 + 1 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40043331097 and 40043331106.

It is not an unprimeable number, because it can be changed into a prime (40043331431) 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 3 ways as a sum of consecutive naturals, for example, 870507176 + ... + 870507221.

It is an arithmetic number, because the mean of its divisors is an integer number (10446086388).

Almost surely, 2^40043331131 is an apocalyptic number.

40043331131 is a deficient number, since it is larger than the sum of its proper divisors (1741014421).

40043331131 is a wasteful number, since it uses less digits than its factorization.

40043331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741014420.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 40043331131 its reverse (13113334004), we get a palindrome (53156665135).

The spelling of 40043331131 in words is "forty billion, forty-three million, three hundred thirty-one thousand, one hundred thirty-one".