31663036613 has 16 divisors (see below), whose sum is σ = 34306848576. Its totient is φ = 29049425280.

The previous prime is 31663036607. The next prime is 31663036697.

31663036613 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 31663036613 - 2¹⁰ = 31663035589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31663036313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720406 + ... + 1738712.

It is an arithmetic number, because the mean of its divisors is an integer number (2144178036).

Almost surely, 2^31663036613 is an apocalyptic number.

It is an amenable number.

31663036613 is a deficient number, since it is larger than the sum of its proper divisors (2643811963).

31663036613 is a wasteful number, since it uses less digits than its factorization.

31663036613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19124.

The product of its (nonzero) digits is 104976, while the sum is 38.

The spelling of 31663036613 in words is "thirty-one billion, six hundred sixty-three million, thirty-six thousand, six hundred thirteen".