109087213 has 2 divisors, whose sum is σ = 109087214. Its totient is φ = 109087212.

The previous prime is 109087201. The next prime is 109087219. The reversal of 109087213 is 312780901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98763844 + 10323369 = 9938^2 + 3213^2 .

It is an emirp because it is prime and its reverse (312780901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109087213 - 2²⁵ = 75532781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109087219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54543606 + 54543607.

It is an arithmetic number, because the mean of its divisors is an integer number (54543607).

Almost surely, 2^109087213 is an apocalyptic number.

It is an amenable number.

109087213 is a deficient number, since it is larger than the sum of its proper divisors (1).

109087213 is an equidigital number, since it uses as much as digits as its factorization.

109087213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 109087213 is about 10444.4824189617. The cubic root of 109087213 is about 477.8129859618.

The spelling of 109087213 in words is "one hundred nine million, eighty-seven thousand, two hundred thirteen".