31664160233 has 2 divisors, whose sum is σ = 31664160234. Its totient is φ = 31664160232.

The previous prime is 31664160221. The next prime is 31664160289. The reversal of 31664160233 is 33206146613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30601204624 + 1062955609 = 174932^2 + 32603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31664160233 is a prime.

It is a super-2 number, since 2×31664160233² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31664160193 and 31664160202.

It is not a weakly prime, because it can be changed into another prime (31664169233) 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 as a sum of consecutive naturals, namely, 15832080116 + 15832080117.

It is an arithmetic number, because the mean of its divisors is an integer number (15832080117).

Almost surely, 2^31664160233 is an apocalyptic number.

It is an amenable number.

31664160233 is a deficient number, since it is larger than the sum of its proper divisors (1).

31664160233 is an equidigital number, since it uses as much as digits as its factorization.

31664160233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 31664160233 in words is "thirty-one billion, six hundred sixty-four million, one hundred sixty thousand, two hundred thirty-three".