100423717 has 2 divisors, whose sum is σ = 100423718. Its totient is φ = 100423716.

The previous prime is 100423679. The next prime is 100423753. The reversal of 100423717 is 717324001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80299521 + 20124196 = 8961^2 + 4486^2 .

It is an emirp because it is prime and its reverse (717324001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100423717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100423691 and 100423700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100433717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50211858 + 50211859.

It is an arithmetic number, because the mean of its divisors is an integer number (50211859).

Almost surely, 2^100423717 is an apocalyptic number.

It is an amenable number.

100423717 is a deficient number, since it is larger than the sum of its proper divisors (1).

100423717 is an equidigital number, since it uses as much as digits as its factorization.

100423717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 100423717 is about 10021.1634554078. The cubic root of 100423717 is about 464.8135329748.

Adding to 100423717 its reverse (717324001), we get a palindrome (817747718).

The spelling of 100423717 in words is "one hundred million, four hundred twenty-three thousand, seven hundred seventeen".