213242534 has 8 divisors (see below), whose sum is σ = 319962960. Its totient is φ = 106588216.

The previous prime is 213242531. The next prime is 213242537. The reversal of 213242534 is 435242312.

It is an interprime number because it is at equal distance from previous prime (213242531) and next prime (213242537).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213242531) 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, 7469 + ... + 21960.

It is an arithmetic number, because the mean of its divisors is an integer number (39995370).

Almost surely, 2^213242534 is an apocalyptic number.

213242534 is a deficient number, since it is larger than the sum of its proper divisors (106720426).

213242534 is a wasteful number, since it uses less digits than its factorization.

213242534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33054.

The product of its digits is 5760, while the sum is 26.

The square root of 213242534 is about 14602.8262333016. The cubic root of 213242534 is about 597.4358482270.

Adding to 213242534 its reverse (435242312), we get a palindrome (648484846).

The spelling of 213242534 in words is "two hundred thirteen million, two hundred forty-two thousand, five hundred thirty-four".