213740507 has 8 divisors (see below), whose sum is σ = 226603296. Its totient is φ = 200909952.

The previous prime is 213740497. The next prime is 213740509. The reversal of 213740507 is 705047312.

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

It is a cyclic number.

It is not a de Polignac number, because 213740507 - 2¹⁴ = 213724123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213740507.

It is not an unprimeable number, because it can be changed into a prime (213740509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6353 + ... + 21629.

It is an arithmetic number, because the mean of its divisors is an integer number (28325412).

Almost surely, 2^213740507 is an apocalyptic number.

213740507 is a deficient number, since it is larger than the sum of its proper divisors (12862789).

213740507 is a wasteful number, since it uses less digits than its factorization.

213740507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16117.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 213740507 is about 14619.8668598589. The cubic root of 213740507 is about 597.9005391941.

Adding to 213740507 its reverse (705047312), we get a palindrome (918787819).

The spelling of 213740507 in words is "two hundred thirteen million, seven hundred forty thousand, five hundred seven".