213377 has 4 divisors (see below), whose sum is σ = 214320. Its totient is φ = 212436.

The previous prime is 213361. The next prime is 213383. The reversal of 213377 is 773312.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213377 - 2⁴ = 213361 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213307) 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, 98 + ... + 660.

It is an arithmetic number, because the mean of its divisors is an integer number (53580).

2²¹³³⁷⁷ is an apocalyptic number.

It is an amenable number.

213377 is a deficient number, since it is larger than the sum of its proper divisors (943).

213377 is an equidigital number, since it uses as much as digits as its factorization.

213377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942.

The product of its digits is 882, while the sum is 23.

The square root of 213377 is about 461.9274834863. The cubic root of 213377 is about 59.7561398428.

Adding to 213377 its reverse (773312), we get a palindrome (986689).

The spelling of 213377 in words is "two hundred thirteen thousand, three hundred seventy-seven".