40131105431 has 4 divisors (see below), whose sum is σ = 40242891600. Its totient is φ = 40019319264.

The previous prime is 40131105389. The next prime is 40131105439. The reversal of 40131105431 is 13450113104.

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 40131105431 - 2¹⁰ = 40131104407 is a prime.

It is a super-3 number, since 3×40131105431³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40131105397 and 40131105406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131105439) 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, 55892546 + ... + 55893263.

It is an arithmetic number, because the mean of its divisors is an integer number (10060722900).

Almost surely, 2^40131105431 is an apocalyptic number.

40131105431 is a deficient number, since it is larger than the sum of its proper divisors (111786169).

40131105431 is a wasteful number, since it uses less digits than its factorization.

40131105431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111786168.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 40131105431 its reverse (13450113104), we get a palindrome (53581218535).

The spelling of 40131105431 in words is "forty billion, one hundred thirty-one million, one hundred five thousand, four hundred thirty-one".