63388231 has 4 divisors (see below), whose sum is σ = 64334392. Its totient is φ = 62442072.

The previous prime is 63388201. The next prime is 63388249. The reversal of 63388231 is 13288336.

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 63388231 - 2¹⁵ = 63355463 is a prime.

It is a super-2 number, since 2×63388231² = 8036135658618722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63388201) 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, 472980 + ... + 473113.

It is an arithmetic number, because the mean of its divisors is an integer number (16083598).

Almost surely, 2^63388231 is an apocalyptic number.

63388231 is a deficient number, since it is larger than the sum of its proper divisors (946161).

63388231 is an equidigital number, since it uses as much as digits as its factorization.

63388231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946160.

The product of its digits is 20736, while the sum is 34.

The square root of 63388231 is about 7961.6726257741. The cubic root of 63388231 is about 398.7213985506.

The spelling of 63388231 in words is "sixty-three million, three hundred eighty-eight thousand, two hundred thirty-one".