4040343131 has 32 divisors (see below), whose sum is σ = 4811825088. Its totient is φ = 3350384640.

The previous prime is 4040343121. The next prime is 4040343149. The reversal of 4040343131 is 1313430404.

It is a cyclic number.

It is not a de Polignac number, because 4040343131 - 2⁶ = 4040343067 is a prime.

It is a super-2 number, since 2×4040343131² = 32648745232437766322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4040343097 and 4040343106.

It is not an unprimeable number, because it can be changed into a prime (4040343101) 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 31 ways as a sum of consecutive naturals, for example, 2026271 + ... + 2028263.

It is an arithmetic number, because the mean of its divisors is an integer number (150369534).

Almost surely, 2^4040343131 is an apocalyptic number.

4040343131 is a deficient number, since it is larger than the sum of its proper divisors (771481957).

4040343131 is a wasteful number, since it uses less digits than its factorization.

4040343131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 4040343131 is about 63563.6934971529. The cubic root of 4040343131 is about 1592.7199375197.

Adding to 4040343131 its reverse (1313430404), we get a palindrome (5353773535).

The spelling of 4040343131 in words is "four billion, forty million, three hundred forty-three thousand, one hundred thirty-one".