166012313 has 2 divisors, whose sum is σ = 166012314. Its totient is φ = 166012312.

The previous prime is 166012307. The next prime is 166012331. The reversal of 166012313 is 313210661.

It is a happy number.

166012313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (166012331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90878089 + 75134224 = 9533^2 + 8668^2 .

It is a cyclic number.

It is not a de Polignac number, because 166012313 - 2¹⁰ = 166011289 is a prime.

It is not a weakly prime, because it can be changed into another prime (166012333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83006156 + 83006157.

It is an arithmetic number, because the mean of its divisors is an integer number (83006157).

Almost surely, 2^166012313 is an apocalyptic number.

It is an amenable number.

166012313 is a deficient number, since it is larger than the sum of its proper divisors (1).

166012313 is an equidigital number, since it uses as much as digits as its factorization.

166012313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 166012313 is about 12884.5765549358. The cubic root of 166012313 is about 549.6000541437.

Adding to 166012313 its reverse (313210661), we get a palindrome (479222974).

The spelling of 166012313 in words is "one hundred sixty-six million, twelve thousand, three hundred thirteen".