107830781 has 2 divisors, whose sum is σ = 107830782. Its totient is φ = 107830780.

The previous prime is 107830777. The next prime is 107830817. The reversal of 107830781 is 187038701.

Together with next prime (107830817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101828281 + 6002500 = 10091^2 + 2450^2 .

It is an emirp because it is prime and its reverse (187038701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 107830781 - 2² = 107830777 is a prime.

It is a super-2 number, since 2×107830781² = 23254954662139922, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107830721) 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, 53915390 + 53915391.

It is an arithmetic number, because the mean of its divisors is an integer number (53915391).

Almost surely, 2^107830781 is an apocalyptic number.

It is an amenable number.

107830781 is a deficient number, since it is larger than the sum of its proper divisors (1).

107830781 is an equidigital number, since it uses as much as digits as its factorization.

107830781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 107830781 is about 10384.1601008459. The cubic root of 107830781 is about 475.9714648172.

The spelling of 107830781 in words is "one hundred seven million, eight hundred thirty thousand, seven hundred eighty-one".