213039 has 6 divisors (see below), whose sum is σ = 307736. Its totient is φ = 142020.

The previous prime is 213029. The next prime is 213043. The reversal of 213039 is 930312.

It is not a de Polignac number, because 213039 - 2⁴ = 213023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11827 + ... + 11844.

2²¹³⁰³⁹ is an apocalyptic number.

213039 is a deficient number, since it is larger than the sum of its proper divisors (94697).

213039 is a wasteful number, since it uses less digits than its factorization.

213039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23677 (or 23674 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 213039 is about 461.5614801952. The cubic root of 213039 is about 59.7245709150.

It can be divided in two parts, 21303 and 9, that added together give a palindrome (21312).

The spelling of 213039 in words is "two hundred thirteen thousand, thirty-nine".