109241681 has 2 divisors, whose sum is σ = 109241682. Its totient is φ = 109241680.

The previous prime is 109241669. The next prime is 109241683. The reversal of 109241681 is 186142901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65351056 + 43890625 = 8084^2 + 6625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109241681 is a prime.

It is a super-2 number, since 2×109241681² = 23867489735411522, which contains 22 as substring.

Together with 109241683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109241683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54620840 + 54620841.

It is an arithmetic number, because the mean of its divisors is an integer number (54620841).

Almost surely, 2^109241681 is an apocalyptic number.

It is an amenable number.

109241681 is a deficient number, since it is larger than the sum of its proper divisors (1).

109241681 is an equidigital number, since it uses as much as digits as its factorization.

109241681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 109241681 is about 10451.8745208695. The cubic root of 109241681 is about 478.0384080644.

The spelling of 109241681 in words is "one hundred nine million, two hundred forty-one thousand, six hundred eighty-one".