213734 has 4 divisors (see below), whose sum is σ = 320604. Its totient is φ = 106866.

The previous prime is 213727. The next prime is 213737. The reversal of 213734 is 437312.

213734 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a d-powerful number, because it can be written as 2⁹ + 1 + 7 + 3⁹ + 3¹¹ + 4⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53432 + ... + 53435.

It is an arithmetic number, because the mean of its divisors is an integer number (80151).

2²¹³⁷³⁴ is an apocalyptic number.

213734 is a deficient number, since it is larger than the sum of its proper divisors (106870).

213734 is a wasteful number, since it uses less digits than its factorization.

213734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106869.

The product of its digits is 504, while the sum is 20.

The square root of 213734 is about 462.3137462806. The cubic root of 213734 is about 59.7894471746.

The spelling of 213734 in words is "two hundred thirteen thousand, seven hundred thirty-four".