31664246613 has 16 divisors (see below), whose sum is σ = 43404578880. Its totient is φ = 20517878016.

The previous prime is 31664246599. The next prime is 31664246623.

31664246613 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31664246613 - 2¹³ = 31664238421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31664246623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37543 + ... + 254436.

It is an arithmetic number, because the mean of its divisors is an integer number (2712786180).

Almost surely, 2^31664246613 is an apocalyptic number.

It is an amenable number.

31664246613 is a deficient number, since it is larger than the sum of its proper divisors (11740332267).

31664246613 is a wasteful number, since it uses less digits than its factorization.

31664246613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292996.

The product of its digits is 373248, while the sum is 42.

The spelling of 31664246613 in words is "thirty-one billion, six hundred sixty-four million, two hundred forty-six thousand, six hundred thirteen".