63081231 has 4 divisors (see below), whose sum is σ = 84108312. Its totient is φ = 42054152.

The previous prime is 63081229. The next prime is 63081241. The reversal of 63081231 is 13218036.

63081231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63081231 - 2¹ = 63081229 is a prime.

It is a super-2 number, since 2×63081231² = 7958483408950722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63081241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10513536 + ... + 10513541.

It is an arithmetic number, because the mean of its divisors is an integer number (21027078).

Almost surely, 2^63081231 is an apocalyptic number.

63081231 is a deficient number, since it is larger than the sum of its proper divisors (21027081).

63081231 is a wasteful number, since it uses less digits than its factorization.

63081231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21027080.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 63081231 is about 7942.3693568103. The cubic root of 63081231 is about 398.0766646925.

Adding to 63081231 its reverse (13218036), we get a palindrome (76299267).

The spelling of 63081231 in words is "sixty-three million, eighty-one thousand, two hundred thirty-one".