108412781 has 2 divisors, whose sum is σ = 108412782. Its totient is φ = 108412780.

The previous prime is 108412763. The next prime is 108412789. The reversal of 108412781 is 187214801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61763881 + 46648900 = 7859^2 + 6830^2 .

It is a cyclic number.

It is not a de Polignac number, because 108412781 - 2¹⁰ = 108411757 is a prime.

It is a super-2 number, since 2×108412781² = 23506662168307922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108412789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54206390 + 54206391.

It is an arithmetic number, because the mean of its divisors is an integer number (54206391).

Almost surely, 2^108412781 is an apocalyptic number.

It is an amenable number.

108412781 is a deficient number, since it is larger than the sum of its proper divisors (1).

108412781 is an equidigital number, since it uses as much as digits as its factorization.

108412781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 108412781 is about 10412.1458403155. The cubic root of 108412781 is about 476.8262562982.

The spelling of 108412781 in words is "one hundred eight million, four hundred twelve thousand, seven hundred eighty-one".