31664336611 has 2 divisors, whose sum is σ = 31664336612. Its totient is φ = 31664336610.

The previous prime is 31664336579. The next prime is 31664336651. The reversal of 31664336611 is 11663346613.

It is a happy number.

It is an a-pointer prime, because the next prime (31664336651) can be obtained adding 31664336611 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31664336611 - 2⁵ = 31664336579 is a prime.

It is not a weakly prime, because it can be changed into another prime (31664336651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15832168305 + 15832168306.

It is an arithmetic number, because the mean of its divisors is an integer number (15832168306).

Almost surely, 2^31664336611 is an apocalyptic number.

31664336611 is a deficient number, since it is larger than the sum of its proper divisors (1).

31664336611 is an equidigital number, since it uses as much as digits as its factorization.

31664336611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 40.

The spelling of 31664336611 in words is "thirty-one billion, six hundred sixty-four million, three hundred thirty-six thousand, six hundred eleven".