100623161 has 2 divisors, whose sum is σ = 100623162. Its totient is φ = 100623160.

The previous prime is 100623101. The next prime is 100623163. The reversal of 100623161 is 161326001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77774761 + 22848400 = 8819^2 + 4780^2 .

It is a cyclic number.

It is not a de Polignac number, because 100623161 - 2¹⁴ = 100606777 is a prime.

Together with 100623163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100623163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50311580 + 50311581.

It is an arithmetic number, because the mean of its divisors is an integer number (50311581).

Almost surely, 2^100623161 is an apocalyptic number.

It is an amenable number.

100623161 is a deficient number, since it is larger than the sum of its proper divisors (1).

100623161 is an equidigital number, since it uses as much as digits as its factorization.

100623161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 100623161 is about 10031.1096594544. The cubic root of 100623161 is about 465.1210399053.

Adding to 100623161 its reverse (161326001), we get a palindrome (261949162).

The spelling of 100623161 in words is "one hundred million, six hundred twenty-three thousand, one hundred sixty-one".