63109213 has 2 divisors, whose sum is σ = 63109214. Its totient is φ = 63109212.

The previous prime is 63109201. The next prime is 63109271. The reversal of 63109213 is 31290136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39275289 + 23833924 = 6267^2 + 4882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63109213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63109513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31554606 + 31554607.

It is an arithmetic number, because the mean of its divisors is an integer number (31554607).

Almost surely, 2^63109213 is an apocalyptic number.

It is an amenable number.

63109213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63109213 is an equidigital number, since it uses as much as digits as its factorization.

63109213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 63109213 is about 7944.1307265175. The cubic root of 63109213 is about 398.1355165064.

Adding to 63109213 its reverse (31290136), we get a palindrome (94399349).

The spelling of 63109213 in words is "sixty-three million, one hundred nine thousand, two hundred thirteen".