101357909 has 2 divisors, whose sum is σ = 101357910. Its totient is φ = 101357908.

The previous prime is 101357903. The next prime is 101357981. The reversal of 101357909 is 909753101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97574884 + 3783025 = 9878^2 + 1945^2 .

It is an emirp because it is prime and its reverse (909753101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101357909 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101357903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50678954 + 50678955.

It is an arithmetic number, because the mean of its divisors is an integer number (50678955).

Almost surely, 2^101357909 is an apocalyptic number.

It is an amenable number.

101357909 is a deficient number, since it is larger than the sum of its proper divisors (1).

101357909 is an equidigital number, since it uses as much as digits as its factorization.

101357909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 101357909 is about 10067.6665121566. Note that the first 3 decimals coincide. The cubic root of 101357909 is about 466.2503965381.

The spelling of 101357909 in words is "one hundred one million, three hundred fifty-seven thousand, nine hundred nine".