3131440043 has 4 divisors (see below), whose sum is σ = 3131670048. Its totient is φ = 3131210040.

The previous prime is 3131440033. The next prime is 3131440051. The reversal of 3131440043 is 3400441313.

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

It is a cyclic number.

It is not a de Polignac number, because 3131440043 - 2¹⁶ = 3131374507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131440033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93203 + ... + 122268.

It is an arithmetic number, because the mean of its divisors is an integer number (782917512).

Almost surely, 2^3131440043 is an apocalyptic number.

3131440043 is a deficient number, since it is larger than the sum of its proper divisors (230005).

3131440043 is a wasteful number, since it uses less digits than its factorization.

3131440043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230004.

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

The square root of 3131440043 is about 55959.2712872496. The cubic root of 3131440043 is about 1463.0124893286.

Adding to 3131440043 its reverse (3400441313), we get a palindrome (6531881356).

The spelling of 3131440043 in words is "three billion, one hundred thirty-one million, four hundred forty thousand, forty-three".