213436 has 6 divisors (see below), whose sum is σ = 373520. Its totient is φ = 106716.

The previous prime is 213407. The next prime is 213449. The reversal of 213436 is 634312.

213436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26676 + ... + 26683.

2²¹³⁴³⁶ is an apocalyptic number.

It is an amenable number.

213436 is a deficient number, since it is larger than the sum of its proper divisors (160084).

213436 is a wasteful number, since it uses less digits than its factorization.

213436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53363 (or 53361 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 213436 is about 461.9913419102. The cubic root of 213436 is about 59.7616469770.

Adding to 213436 its reverse (634312), we get a palindrome (847748).

The spelling of 213436 in words is "two hundred thirteen thousand, four hundred thirty-six".