213719 has 4 divisors (see below), whose sum is σ = 233160. Its totient is φ = 194280.

The previous prime is 213713. The next prime is 213721. The reversal of 213719 is 917312.

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

It is a cyclic number.

It is not a de Polignac number, because 213719 - 2¹² = 209623 is a prime.

It is a super-2 number, since 2×213719² = 91351621922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213694 and 213703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213713) 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, 9704 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (58290).

2²¹³⁷¹⁹ is an apocalyptic number.

213719 is a deficient number, since it is larger than the sum of its proper divisors (19441).

213719 is a wasteful number, since it uses less digits than its factorization.

213719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19440.

The product of its digits is 378, while the sum is 23.

The square root of 213719 is about 462.2975232467. The cubic root of 213719 is about 59.7880484536.

The spelling of 213719 in words is "two hundred thirteen thousand, seven hundred nineteen".