103811287 has 2 divisors, whose sum is σ = 103811288. Its totient is φ = 103811286.

The previous prime is 103811261. The next prime is 103811311. The reversal of 103811287 is 782118301.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (782118301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103811287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103811237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51905643 + 51905644.

It is an arithmetic number, because the mean of its divisors is an integer number (51905644).

Almost surely, 2^103811287 is an apocalyptic number.

103811287 is a deficient number, since it is larger than the sum of its proper divisors (1).

103811287 is an equidigital number, since it uses as much as digits as its factorization.

103811287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 103811287 is about 10188.7824100822. The cubic root of 103811287 is about 469.9823246710.

Adding to 103811287 its reverse (782118301), we get a palindrome (885929588).

The spelling of 103811287 in words is "one hundred three million, eight hundred eleven thousand, two hundred eighty-seven".