63131319507 has 4 divisors (see below), whose sum is σ = 84175092680. Its totient is φ = 42087546336.

The previous prime is 63131319499. The next prime is 63131319509. The reversal of 63131319507 is 70591313136.

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

It is not a de Polignac number, because 63131319507 - 2³ = 63131319499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63131319509) 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 3 ways as a sum of consecutive naturals, for example, 10521886582 + ... + 10521886587.

It is an arithmetic number, because the mean of its divisors is an integer number (21043773170).

Almost surely, 2^63131319507 is an apocalyptic number.

63131319507 is a deficient number, since it is larger than the sum of its proper divisors (21043773173).

63131319507 is a wasteful number, since it uses less digits than its factorization.

63131319507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21043773172.

The product of its (nonzero) digits is 51030, while the sum is 39.

The spelling of 63131319507 in words is "sixty-three billion, one hundred thirty-one million, three hundred nineteen thousand, five hundred seven".