100315091 has 2 divisors, whose sum is σ = 100315092. Its totient is φ = 100315090.

The previous prime is 100315081. The next prime is 100315093. The reversal of 100315091 is 190513001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100315091 - 2⁶ = 100315027 is a prime.

Together with 100315093, 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 (100315093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50157545 + 50157546.

It is an arithmetic number, because the mean of its divisors is an integer number (50157546).

Almost surely, 2^100315091 is an apocalyptic number.

100315091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100315091 is an equidigital number, since it uses as much as digits as its factorization.

100315091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 100315091 is about 10015.7421592212. The cubic root of 100315091 is about 464.6458798472.

Adding to 100315091 its reverse (190513001), we get a palindrome (290828092).

The spelling of 100315091 in words is "one hundred million, three hundred fifteen thousand, ninety-one".