63032321 has 4 divisors (see below), whose sum is σ = 68762544. Its totient is φ = 57302100.

The previous prime is 63032303. The next prime is 63032323. The reversal of 63032321 is 12323036.

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 63032321 - 2⁶ = 63032257 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63032293 and 63032302.

It is not an unprimeable number, because it can be changed into a prime (63032323) 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, 2865095 + ... + 2865116.

It is an arithmetic number, because the mean of its divisors is an integer number (17190636).

Almost surely, 2^63032321 is an apocalyptic number.

It is an amenable number.

63032321 is a deficient number, since it is larger than the sum of its proper divisors (5730223).

63032321 is a wasteful number, since it uses less digits than its factorization.

63032321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730222.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 63032321 is about 7939.2897037455. The cubic root of 63032321 is about 397.9737552453.

Adding to 63032321 its reverse (12323036), we get a palindrome (75355357).

The spelling of 63032321 in words is "sixty-three million, thirty-two thousand, three hundred twenty-one".