188213 has 4 divisors (see below), whose sum is σ = 190080. Its totient is φ = 186348.

The previous prime is 188197. The next prime is 188249. The reversal of 188213 is 312881.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312881 = 29 ⋅10789.

It is a cyclic number.

It is not a de Polignac number, because 188213 - 2⁴ = 188197 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188273) 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, 773 + ... + 986.

It is an arithmetic number, because the mean of its divisors is an integer number (47520).

2¹⁸⁸²¹³ is an apocalyptic number.

It is an amenable number.

188213 is a deficient number, since it is larger than the sum of its proper divisors (1867).

188213 is a wasteful number, since it uses less digits than its factorization.

188213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866.

The product of its digits is 384, while the sum is 23.

The square root of 188213 is about 433.8352221754. The cubic root of 188213 is about 57.3081698059.

The spelling of 188213 in words is "one hundred eighty-eight thousand, two hundred thirteen".