31650644605613 has 6 divisors (see below), whose sum is σ = 34789551508782. Its totient is φ = 28773313277720.

The previous prime is 31650644605607. The next prime is 31650644605621.

31650644605613 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 29020921829449 + 2629722776164 = 5387107^2 + 1621642^2 .

It is not a de Polignac number, because 31650644605613 - 2¹⁰ = 31650644604589 is a prime.

It is a super-2 number, since 2×31650644605613² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31650644635613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130787787506 + ... + 130787787747.

It is an arithmetic number, because the mean of its divisors is an integer number (5798258584797).

Almost surely, 2^{31650644605613} is an apocalyptic number.

It is an amenable number.

31650644605613 is a deficient number, since it is larger than the sum of its proper divisors (3138906903169).

31650644605613 is a wasteful number, since it uses less digits than its factorization.

31650644605613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261575575275 (or 261575575264 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 31650644605613 in words is "thirty-one trillion, six hundred fifty billion, six hundred forty-four million, six hundred five thousand, six hundred thirteen".