63281011 has 4 divisors (see below), whose sum is σ = 63325000. Its totient is φ = 63237024.

The previous prime is 63280979. The next prime is 63281051. The reversal of 63281011 is 11018236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63281011 - 2⁵ = 63280979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63281051) 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, 19761 + ... + 22738.

It is an arithmetic number, because the mean of its divisors is an integer number (15831250).

Almost surely, 2^63281011 is an apocalyptic number.

63281011 is a deficient number, since it is larger than the sum of its proper divisors (43989).

63281011 is a wasteful number, since it uses less digits than its factorization.

63281011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43988.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 63281011 is about 7954.9362662437. The cubic root of 63281011 is about 398.4964617630.

Adding to 63281011 its reverse (11018236), we get a palindrome (74299247).

The spelling of 63281011 in words is "sixty-three million, two hundred eighty-one thousand, eleven".