213495073 has 4 divisors (see below), whose sum is σ = 232903728. Its totient is φ = 194086420.

The previous prime is 213495041. The next prime is 213495091. The reversal of 213495073 is 370594312.

213495073 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 213495073 - 2⁵ = 213495041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213492073) 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, 9704311 + ... + 9704332.

It is an arithmetic number, because the mean of its divisors is an integer number (58225932).

Almost surely, 2^213495073 is an apocalyptic number.

It is an amenable number.

213495073 is a deficient number, since it is larger than the sum of its proper divisors (19408655).

213495073 is a wasteful number, since it uses less digits than its factorization.

213495073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19408654.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 213495073 is about 14611.4705967606. The cubic root of 213495073 is about 597.6715990850.

The spelling of 213495073 in words is "two hundred thirteen million, four hundred ninety-five thousand, seventy-three".