63190321 has 2 divisors, whose sum is σ = 63190322. Its totient is φ = 63190320.

The previous prime is 63190319. The next prime is 63190331. The reversal of 63190321 is 12309136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53802225 + 9388096 = 7335^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 63190321 - 2¹ = 63190319 is a prime.

Together with 63190319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (63190301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31595160 + 31595161.

It is an arithmetic number, because the mean of its divisors is an integer number (31595161).

Almost surely, 2^63190321 is an apocalyptic number.

It is an amenable number.

63190321 is a deficient number, since it is larger than the sum of its proper divisors (1).

63190321 is an equidigital number, since it uses as much as digits as its factorization.

63190321 is an evil number, because the sum of its binary digits is even.

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

The square root of 63190321 is about 7949.2339882532. The cubic root of 63190321 is about 398.3060048282.

Adding to 63190321 its reverse (12309136), we get a palindrome (75499457).

The spelling of 63190321 in words is "sixty-three million, one hundred ninety thousand, three hundred twenty-one".