63113213 has 2 divisors, whose sum is σ = 63113214. Its totient is φ = 63113212.

The previous prime is 63113209. The next prime is 63113221. The reversal of 63113213 is 31231136.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59567524 + 3545689 = 7718^2 + 1883^2 .

It is a cyclic number.

It is not a de Polignac number, because 63113213 - 2² = 63113209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63113203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31556606 + 31556607.

It is an arithmetic number, because the mean of its divisors is an integer number (31556607).

Almost surely, 2^63113213 is an apocalyptic number.

It is an amenable number.

63113213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63113213 is an equidigital number, since it uses as much as digits as its factorization.

63113213 is an evil number, because the sum of its binary digits is even.

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

The square root of 63113213 is about 7944.3824807218. The cubic root of 63113213 is about 398.1439278954.

Adding to 63113213 its reverse (31231136), we get a palindrome (94344349).

The spelling of 63113213 in words is "sixty-three million, one hundred thirteen thousand, two hundred thirteen".