100110391 has 2 divisors, whose sum is σ = 100110392. Its totient is φ = 100110390.

The previous prime is 100110389. The next prime is 100110403. The reversal of 100110391 is 193011001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100110391 - 2¹ = 100110389 is a prime.

Together with 100110389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100110341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055195 + 50055196.

It is an arithmetic number, because the mean of its divisors is an integer number (50055196).

Almost surely, 2^100110391 is an apocalyptic number.

100110391 is a deficient number, since it is larger than the sum of its proper divisors (1).

100110391 is an equidigital number, since it uses as much as digits as its factorization.

100110391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 16.

The square root of 100110391 is about 10005.5180275686. The cubic root of 100110391 is about 464.3296170961.

Adding to 100110391 its reverse (193011001), we get a palindrome (293121392).

The spelling of 100110391 in words is "one hundred million, one hundred ten thousand, three hundred ninety-one".