44040140531 has 4 divisors (see below), whose sum is σ = 44088697272. Its totient is φ = 43991583792.

The previous prime is 44040140513. The next prime is 44040140533. The reversal of 44040140531 is 13504104044.

It is a happy number.

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 44040140531 - 2¹⁸ = 44039878387 is a prime.

It is a super-2 number, since 2×44040140531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44040140531.

It is not an unprimeable number, because it can be changed into a prime (44040140533) 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, 24277010 + ... + 24278823.

It is an arithmetic number, because the mean of its divisors is an integer number (11022174318).

Almost surely, 2^44040140531 is an apocalyptic number.

44040140531 is a deficient number, since it is larger than the sum of its proper divisors (48556741).

44040140531 is an equidigital number, since it uses as much as digits as its factorization.

44040140531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48556740.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 44040140531 its reverse (13504104044), we get a palindrome (57544244575).

The spelling of 44040140531 in words is "forty-four billion, forty million, one hundred forty thousand, five hundred thirty-one".