31440224041 has 4 divisors (see below), whose sum is σ = 31464025684. Its totient is φ = 31416422400.

The previous prime is 31440224033. The next prime is 31440224059. The reversal of 31440224041 is 14042204413.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29276578816 + 2163645225 = 171104^2 + 46515^2 .

It is a cyclic number.

It is not a de Polignac number, because 31440224041 - 2³ = 31440224033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31440223997 and 31440224015.

It is not an unprimeable number, because it can be changed into a prime (31440224441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11898840 + ... + 11901481.

It is an arithmetic number, because the mean of its divisors is an integer number (7866006421).

Almost surely, 2^31440224041 is an apocalyptic number.

It is an amenable number.

31440224041 is a deficient number, since it is larger than the sum of its proper divisors (23801643).

31440224041 is a wasteful number, since it uses less digits than its factorization.

31440224041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23801642.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 31440224041 its reverse (14042204413), we get a palindrome (45482428454).

The spelling of 31440224041 in words is "thirty-one billion, four hundred forty million, two hundred twenty-four thousand, forty-one".