213830 has 8 divisors (see below), whose sum is σ = 384912. Its totient is φ = 85528.

The previous prime is 213827. The next prime is 213833. The reversal of 213830 is 38312.

It is an interprime number because it is at equal distance from previous prime (213827) and next prime (213833).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 213799 and 213808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213833) 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, 10682 + ... + 10701.

It is an arithmetic number, because the mean of its divisors is an integer number (48114).

2²¹³⁸³⁰ is an apocalyptic number.

213830 is a deficient number, since it is larger than the sum of its proper divisors (171082).

213830 is a wasteful number, since it uses less digits than its factorization.

213830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21390.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 213830 is about 462.4175602202. The cubic root of 213830 is about 59.7983974396.

The spelling of 213830 in words is "two hundred thirteen thousand, eight hundred thirty".