109505213 has 2 divisors, whose sum is σ = 109505214. Its totient is φ = 109505212.

The previous prime is 109505197. The next prime is 109505233. The reversal of 109505213 is 312505901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54789604 + 54715609 = 7402^2 + 7397^2 .

It is a cyclic number.

It is not a de Polignac number, because 109505213 - 2⁴ = 109505197 is a prime.

It is a Sophie Germain 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 (109505233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54752606 + 54752607.

It is an arithmetic number, because the mean of its divisors is an integer number (54752607).

Almost surely, 2^109505213 is an apocalyptic number.

It is an amenable number.

109505213 is a deficient number, since it is larger than the sum of its proper divisors (1).

109505213 is an equidigital number, since it uses as much as digits as its factorization.

109505213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 109505213 is about 10464.4738520386. The cubic root of 109505213 is about 478.4225021504.

The spelling of 109505213 in words is "one hundred nine million, five hundred five thousand, two hundred thirteen".