63231131444 has 48 divisors (see below), whose sum is σ = 124539472512. Its totient is φ = 27871654272.

The previous prime is 63231131443. The next prime is 63231131449. The reversal of 63231131444 is 44413113236.

It is a self number, because there is not a number n which added to its sum of digits gives 63231131444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63231131441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740507 + ... + 821469.

It is an arithmetic number, because the mean of its divisors is an integer number (2594572344).

Almost surely, 2^63231131444 is an apocalyptic number.

It is an amenable number.

63231131444 is a deficient number, since it is larger than the sum of its proper divisors (61308341068).

63231131444 is a wasteful number, since it uses less digits than its factorization.

63231131444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81656 (or 81654 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The spelling of 63231131444 in words is "sixty-three billion, two hundred thirty-one million, one hundred thirty-one thousand, four hundred forty-four".