100891423 has 2 divisors, whose sum is σ = 100891424. Its totient is φ = 100891422.

The previous prime is 100891421. The next prime is 100891457. The reversal of 100891423 is 324198001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (324198001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100891423 - 2¹ = 100891421 is a prime.

Together with 100891421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 100891391 and 100891400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100891421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50445711 + 50445712.

It is an arithmetic number, because the mean of its divisors is an integer number (50445712).

Almost surely, 2^100891423 is an apocalyptic number.

100891423 is a deficient number, since it is larger than the sum of its proper divisors (1).

100891423 is an equidigital number, since it uses as much as digits as its factorization.

100891423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 100891423 is about 10044.4722609005. The cubic root of 100891423 is about 465.5340116972.

The spelling of 100891423 in words is "one hundred million, eight hundred ninety-one thousand, four hundred twenty-three".