213195097 has 4 divisors (see below), whose sum is σ = 217217700. Its totient is φ = 209172496.

The previous prime is 213195089. The next prime is 213195127. The reversal of 213195097 is 790591312.

213195097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87216921 + 125978176 = 9339^2 + 11224^2 .

It is a cyclic number.

It is not a de Polignac number, because 213195097 - 2³ = 213195089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213195077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011222 + ... + 2011327.

It is an arithmetic number, because the mean of its divisors is an integer number (54304425).

Almost surely, 2^213195097 is an apocalyptic number.

It is an amenable number.

213195097 is a deficient number, since it is larger than the sum of its proper divisors (4022603).

213195097 is an equidigital number, since it uses as much as digits as its factorization.

213195097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022602.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 213195097 is about 14601.2019025832. The cubic root of 213195097 is about 597.3915439544.

The spelling of 213195097 in words is "two hundred thirteen million, one hundred ninety-five thousand, ninety-seven".