63031861213 has 2 divisors, whose sum is σ = 63031861214. Its totient is φ = 63031861212.

The previous prime is 63031861183. The next prime is 63031861223. The reversal of 63031861213 is 31216813036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61050008889 + 1981852324 = 247083^2 + 44518^2 .

It is a cyclic number.

It is not a de Polignac number, because 63031861213 - 2⁵ = 63031861181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63031861223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31515930606 + 31515930607.

It is an arithmetic number, because the mean of its divisors is an integer number (31515930607).

Almost surely, 2^63031861213 is an apocalyptic number.

It is an amenable number.

63031861213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63031861213 is an equidigital number, since it uses as much as digits as its factorization.

63031861213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 63031861213 in words is "sixty-three billion, thirty-one million, eight hundred sixty-one thousand, two hundred thirteen".