109229381 has 2 divisors, whose sum is σ = 109229382. Its totient is φ = 109229380.

The previous prime is 109229377. The next prime is 109229413. The reversal of 109229381 is 183922901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61481281 + 47748100 = 7841^2 + 6910^2 .

It is a cyclic number.

It is not a de Polignac number, because 109229381 - 2² = 109229377 is a prime.

It is a super-2 number, since 2×109229381² = 23862115347286322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109229321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54614690 + 54614691.

It is an arithmetic number, because the mean of its divisors is an integer number (54614691).

Almost surely, 2^109229381 is an apocalyptic number.

It is an amenable number.

109229381 is a deficient number, since it is larger than the sum of its proper divisors (1).

109229381 is an equidigital number, since it uses as much as digits as its factorization.

109229381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 109229381 is about 10451.2860931084. The cubic root of 109229381 is about 478.0204659106.

The spelling of 109229381 in words is "one hundred nine million, two hundred twenty-nine thousand, three hundred eighty-one".