40344111431 has 8 divisors (see below), whose sum is σ = 43463521920. Its totient is φ = 37226989152.

The previous prime is 40344111389. The next prime is 40344111449. The reversal of 40344111431 is 13411144304.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40344111431 - 2¹⁰ = 40344110407 is a prime.

It is a super-2 number, since 2×40344111431² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40344111431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40344111461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535340 + ... + 606033.

It is an arithmetic number, because the mean of its divisors is an integer number (5432940240).

Almost surely, 2^40344111431 is an apocalyptic number.

40344111431 is a deficient number, since it is larger than the sum of its proper divisors (3119410489).

40344111431 is a wasteful number, since it uses less digits than its factorization.

40344111431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144105.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 40344111431 its reverse (13411144304), we get a palindrome (53755255735).

The spelling of 40344111431 in words is "forty billion, three hundred forty-four million, one hundred eleven thousand, four hundred thirty-one".