100240913 has 2 divisors, whose sum is σ = 100240914. Its totient is φ = 100240912.

The previous prime is 100240909. The next prime is 100240937. The reversal of 100240913 is 319042001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94614529 + 5626384 = 9727^2 + 2372^2 .

It is a cyclic number.

It is not a de Polignac number, because 100240913 - 2² = 100240909 is a prime.

It is not a weakly prime, because it can be changed into another prime (100242913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50120456 + 50120457.

It is an arithmetic number, because the mean of its divisors is an integer number (50120457).

Almost surely, 2^100240913 is an apocalyptic number.

It is an amenable number.

100240913 is a deficient number, since it is larger than the sum of its proper divisors (1).

100240913 is an equidigital number, since it uses as much as digits as its factorization.

100240913 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 100240913 is about 10012.0384038416. The cubic root of 100240913 is about 464.5313241320.

Adding to 100240913 its reverse (319042001), we get a palindrome (419282914).

The spelling of 100240913 in words is "one hundred million, two hundred forty thousand, nine hundred thirteen".