31313200212641 has 2 divisors, whose sum is σ = 31313200212642. Its totient is φ = 31313200212640.

The previous prime is 31313200212631. The next prime is 31313200212649. The reversal of 31313200212641 is 14621200231313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31311533940241 + 1666272400 = 5595671^2 + 40820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31313200212641 is a prime.

It is not a weakly prime, because it can be changed into another prime (31313200212649) 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 as a sum of consecutive naturals, namely, 15656600106320 + 15656600106321.

It is an arithmetic number, because the mean of its divisors is an integer number (15656600106321).

Almost surely, 2^{31313200212641} is an apocalyptic number.

It is an amenable number.

31313200212641 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313200212641 is an equidigital number, since it uses as much as digits as its factorization.

31313200212641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 31313200212641 its reverse (14621200231313), we get a palindrome (45934400443954).

The spelling of 31313200212641 in words is "thirty-one trillion, three hundred thirteen billion, two hundred million, two hundred twelve thousand, six hundred forty-one".