31211300063 has 2 divisors, whose sum is σ = 31211300064. Its totient is φ = 31211300062.

The previous prime is 31211300027. The next prime is 31211300117. The reversal of 31211300063 is 36000311213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31211300063 - 2³⁰ = 30137558239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31211350063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605650031 + 15605650032.

It is an arithmetic number, because the mean of its divisors is an integer number (15605650032).

Almost surely, 2^31211300063 is an apocalyptic number.

31211300063 is a deficient number, since it is larger than the sum of its proper divisors (1).

31211300063 is an equidigital number, since it uses as much as digits as its factorization.

31211300063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31211300063 its reverse (36000311213), we get a palindrome (67211611276).

The spelling of 31211300063 in words is "thirty-one billion, two hundred eleven million, three hundred thousand, sixty-three".