63131690213 has 2 divisors, whose sum is σ = 63131690214. Its totient is φ = 63131690212.

The previous prime is 63131690207. The next prime is 63131690239. The reversal of 63131690213 is 31209613136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61572467044 + 1559223169 = 248138^2 + 39487^2 .

It is a cyclic number.

It is not a de Polignac number, because 63131690213 - 2³⁴ = 45951821029 is a prime.

It is a super-2 number, since 2×63131690213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63131693213) 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, 31565845106 + 31565845107.

It is an arithmetic number, because the mean of its divisors is an integer number (31565845107).

Almost surely, 2^63131690213 is an apocalyptic number.

It is an amenable number.

63131690213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63131690213 is an equidigital number, since it uses as much as digits as its factorization.

63131690213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 63131690213 in words is "sixty-three billion, one hundred thirty-one million, six hundred ninety thousand, two hundred thirteen".