108512981 has 2 divisors, whose sum is σ = 108512982. Its totient is φ = 108512980.

The previous prime is 108512969. The next prime is 108513059. The reversal of 108512981 is 189215801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107640625 + 872356 = 10375^2 + 934^2 .

It is a cyclic number.

It is not a de Polignac number, because 108512981 - 2¹⁰ = 108511957 is a prime.

It is a super-2 number, since 2×108512981² = 23550134091012722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108512941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54256490 + 54256491.

It is an arithmetic number, because the mean of its divisors is an integer number (54256491).

Almost surely, 2^108512981 is an apocalyptic number.

It is an amenable number.

108512981 is a deficient number, since it is larger than the sum of its proper divisors (1).

108512981 is an equidigital number, since it uses as much as digits as its factorization.

108512981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 108512981 is about 10416.9564173035. The cubic root of 108512981 is about 476.9731125344.

The spelling of 108512981 in words is "one hundred eight million, five hundred twelve thousand, nine hundred eighty-one".