101381669 has 2 divisors, whose sum is σ = 101381670. Its totient is φ = 101381668.

The previous prime is 101381611. The next prime is 101381671. The reversal of 101381669 is 966183101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100200100 + 1181569 = 10010^2 + 1087^2 .

It is a cyclic number.

It is not a de Polignac number, because 101381669 - 2¹⁶ = 101316133 is a prime.

It is a super-2 number, since 2×101381669² = 20556485618451122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 101381671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101381689) 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, 50690834 + 50690835.

It is an arithmetic number, because the mean of its divisors is an integer number (50690835).

Almost surely, 2^101381669 is an apocalyptic number.

It is an amenable number.

101381669 is a deficient number, since it is larger than the sum of its proper divisors (1).

101381669 is an equidigital number, since it uses as much as digits as its factorization.

101381669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 101381669 is about 10068.8464582593. The cubic root of 101381669 is about 466.2868260055.

The spelling of 101381669 in words is "one hundred one million, three hundred eighty-one thousand, six hundred sixty-nine".