31441332313 has 2 divisors, whose sum is σ = 31441332314. Its totient is φ = 31441332312.

The previous prime is 31441332301. The next prime is 31441332323. The reversal of 31441332313 is 31323314413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27743232969 + 3698099344 = 166563^2 + 60812^2 .

It is a cyclic number.

It is not a de Polignac number, because 31441332313 - 2²¹ = 31439235161 is a prime.

It is not a weakly prime, because it can be changed into another prime (31441332323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720666156 + 15720666157.

It is an arithmetic number, because the mean of its divisors is an integer number (15720666157).

Almost surely, 2^31441332313 is an apocalyptic number.

It is an amenable number.

31441332313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31441332313 is an equidigital number, since it uses as much as digits as its factorization.

31441332313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

Adding to 31441332313 its reverse (31323314413), we get a palindrome (62764646726).

The spelling of 31441332313 in words is "thirty-one billion, four hundred forty-one million, three hundred thirty-two thousand, three hundred thirteen".