31013244481 has 2 divisors, whose sum is σ = 31013244482. Its totient is φ = 31013244480.

The previous prime is 31013244463. The next prime is 31013244523. The reversal of 31013244481 is 18444231013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17843616400 + 13169628081 = 133580^2 + 114759^2 .

It is a cyclic number.

It is not a de Polignac number, because 31013244481 - 2²⁷ = 30879026753 is a prime.

It is a super-2 number, since 2×31013244481² (a number of 22 digits) contains 22 as substring.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (31013644481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506622240 + 15506622241.

It is an arithmetic number, because the mean of its divisors is an integer number (15506622241).

Almost surely, 2^31013244481 is an apocalyptic number.

It is an amenable number.

31013244481 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013244481 is an equidigital number, since it uses as much as digits as its factorization.

31013244481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 31013244481 its reverse (18444231013), we get a palindrome (49457475494).

The spelling of 31013244481 in words is "thirty-one billion, thirteen million, two hundred forty-four thousand, four hundred eighty-one".