213007838 has 4 divisors (see below), whose sum is σ = 319511760. Its totient is φ = 106503918.

The previous prime is 213007831. The next prime is 213007843. The reversal of 213007838 is 838700312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213007831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53251958 + ... + 53251961.

It is an arithmetic number, because the mean of its divisors is an integer number (79877940).

Almost surely, 2^213007838 is an apocalyptic number.

213007838 is a deficient number, since it is larger than the sum of its proper divisors (106503922).

213007838 is a wasteful number, since it uses less digits than its factorization.

213007838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106503921.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 213007838 is about 14594.7880423115. The cubic root of 213007838 is about 597.2165872859.

The spelling of 213007838 in words is "two hundred thirteen million, seven thousand, eight hundred thirty-eight".