63231839 has 4 divisors (see below), whose sum is σ = 68980200. Its totient is φ = 57483480.

The previous prime is 63231827. The next prime is 63231841. The reversal of 63231839 is 93813236.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63231839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63231799 and 63231808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63231859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2874164 + ... + 2874185.

It is an arithmetic number, because the mean of its divisors is an integer number (17245050).

Almost surely, 2^63231839 is an apocalyptic number.

63231839 is a deficient number, since it is larger than the sum of its proper divisors (5748361).

63231839 is a wasteful number, since it uses less digits than its factorization.

63231839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5748360.

The product of its digits is 23328, while the sum is 35.

The square root of 63231839 is about 7951.8450060348. The cubic root of 63231839 is about 398.3932188616.

The spelling of 63231839 in words is "sixty-three million, two hundred thirty-one thousand, eight hundred thirty-nine".