103381891 has 2 divisors, whose sum is σ = 103381892. Its totient is φ = 103381890.

The previous prime is 103381877. The next prime is 103381919. The reversal of 103381891 is 198183301.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103381891 - 2⁹ = 103381379 is a prime.

It is not a weakly prime, because it can be changed into another prime (103381991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51690945 + 51690946.

It is an arithmetic number, because the mean of its divisors is an integer number (51690946).

Almost surely, 2^103381891 is an apocalyptic number.

103381891 is a deficient number, since it is larger than the sum of its proper divisors (1).

103381891 is an equidigital number, since it uses as much as digits as its factorization.

103381891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 103381891 is about 10167.6885770562. The cubic root of 103381891 is about 469.3334311353. Note that the first 3 decimals are identical.

The spelling of 103381891 in words is "one hundred three million, three hundred eighty-one thousand, eight hundred ninety-one".