31130056841 has 4 divisors (see below), whose sum is σ = 33524676612. Its totient is φ = 28735437072.

The previous prime is 31130056831. The next prime is 31130056871. The reversal of 31130056841 is 14865003113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14865003113 = 2153 ⋅6904321.

It can be written as a sum of positive squares in 2 ways, for example, as 21189169225 + 9940887616 = 145565^2 + 99704^2 .

It is a cyclic number.

It is not a de Polignac number, because 31130056841 - 2¹⁸ = 31129794697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31130056798 and 31130056807.

It is not an unprimeable number, because it can be changed into a prime (31130056801) 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, 1197309866 + ... + 1197309891.

It is an arithmetic number, because the mean of its divisors is an integer number (8381169153).

Almost surely, 2^31130056841 is an apocalyptic number.

It is an amenable number.

31130056841 is a deficient number, since it is larger than the sum of its proper divisors (2394619771).

31130056841 is a wasteful number, since it uses less digits than its factorization.

31130056841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394619770.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 31130056841 its reverse (14865003113), we get a palindrome (45995059954).

The spelling of 31130056841 in words is "thirty-one billion, one hundred thirty million, fifty-six thousand, eight hundred forty-one".