40441331431 has 4 divisors (see below), whose sum is σ = 40928576472. Its totient is φ = 39954086392.

The previous prime is 40441331389. The next prime is 40441331443. The reversal of 40441331431 is 13413314404.

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 40441331431 - 2⁷ = 40441331303 is a prime.

It is a super-2 number, since 2×40441331431² (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 40441331431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40441331461) 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, 243622396 + ... + 243622561.

It is an arithmetic number, because the mean of its divisors is an integer number (10232144118).

Almost surely, 2^40441331431 is an apocalyptic number.

40441331431 is a deficient number, since it is larger than the sum of its proper divisors (487245041).

40441331431 is an equidigital number, since it uses as much as digits as its factorization.

40441331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487245040.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 40441331431 its reverse (13413314404), we get a palindrome (53854645835).

The spelling of 40441331431 in words is "forty billion, four hundred forty-one million, three hundred thirty-one thousand, four hundred thirty-one".