100304161 has 2 divisors, whose sum is σ = 100304162. Its totient is φ = 100304160.

The previous prime is 100304153. The next prime is 100304177. The reversal of 100304161 is 161403001.

It is an a-pointer prime, because the next prime (100304177) can be obtained adding 100304161 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85673536 + 14630625 = 9256^2 + 3825^2 .

It is a cyclic number.

It is not a de Polignac number, because 100304161 - 2³ = 100304153 is a prime.

It is not a weakly prime, because it can be changed into another prime (100304101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50152080 + 50152081.

It is an arithmetic number, because the mean of its divisors is an integer number (50152081).

Almost surely, 2^100304161 is an apocalyptic number.

It is an amenable number.

100304161 is a deficient number, since it is larger than the sum of its proper divisors (1).

100304161 is an equidigital number, since it uses as much as digits as its factorization.

100304161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 100304161 is about 10015.1965033144. The cubic root of 100304161 is about 464.6290038090.

Adding to 100304161 its reverse (161403001), we get a palindrome (261707162).

It can be divided in two parts, 100 and 304161, that multiplied together give a triangular number (30416100 = T₇₇₉₉).

The spelling of 100304161 in words is "one hundred million, three hundred four thousand, one hundred sixty-one".