31538883513 has 8 divisors (see below), whose sum is σ = 42485369248. Its totient is φ = 20809160064.

The previous prime is 31538883499. The next prime is 31538883521.

It is a happy number.

31538883513 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31538883513 - 2⁶ = 31538883449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31538883553) 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 7 ways as a sum of consecutive naturals, for example, 54190231 + ... + 54190812.

It is an arithmetic number, because the mean of its divisors is an integer number (5310671156).

Almost surely, 2^31538883513 is an apocalyptic number.

It is an amenable number.

31538883513 is a deficient number, since it is larger than the sum of its proper divisors (10946485735).

31538883513 is a wasteful number, since it uses less digits than its factorization.

31538883513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108381143.

The product of its digits is 1036800, while the sum is 48.

The spelling of 31538883513 in words is "thirty-one billion, five hundred thirty-eight million, eight hundred eighty-three thousand, five hundred thirteen".