63135321 has 4 divisors (see below), whose sum is σ = 84180432. Its totient is φ = 42090212.

The previous prime is 63135227. The next prime is 63135353. The reversal of 63135321 is 12353136.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63135321 - 2¹⁹ = 62611033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63135291 and 63135300.

It is not an unprimeable number, because it can be changed into a prime (63135421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10522551 + ... + 10522556.

It is an arithmetic number, because the mean of its divisors is an integer number (21045108).

Almost surely, 2^63135321 is an apocalyptic number.

It is an amenable number.

63135321 is a deficient number, since it is larger than the sum of its proper divisors (21045111).

63135321 is a wasteful number, since it uses less digits than its factorization.

63135321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21045110.

The product of its digits is 1620, while the sum is 24.

The square root of 63135321 is about 7945.7737823323. The cubic root of 63135321 is about 398.1904112331.

Adding to 63135321 its reverse (12353136), we get a palindrome (75488457).

The spelling of 63135321 in words is "sixty-three million, one hundred thirty-five thousand, three hundred twenty-one".