213405193 has 4 divisors (see below), whose sum is σ = 213443280. Its totient is φ = 213367108.

The previous prime is 213405191. The next prime is 213405211. The reversal of 213405193 is 391504312.

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 a cyclic number.

It is not a de Polignac number, because 213405193 - 2¹ = 213405191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213405191) 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, 8803 + ... + 22456.

It is an arithmetic number, because the mean of its divisors is an integer number (53360820).

Almost surely, 2^213405193 is an apocalyptic number.

It is an amenable number.

213405193 is a deficient number, since it is larger than the sum of its proper divisors (38087).

213405193 is an equidigital number, since it uses as much as digits as its factorization.

213405193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38086.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 213405193 is about 14608.3946072113. The cubic root of 213405193 is about 597.5877153951.

The spelling of 213405193 in words is "two hundred thirteen million, four hundred five thousand, one hundred ninety-three".