213520235 has 8 divisors (see below), whose sum is σ = 256315776. Its totient is φ = 170755200.

The previous prime is 213520231. The next prime is 213520249. The reversal of 213520235 is 532025312.

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

It is not a de Polignac number, because 213520235 - 2² = 213520231 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 213520235.

It is not an unprimeable number, because it can be changed into a prime (213520231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12710 + ... + 24260.

It is an arithmetic number, because the mean of its divisors is an integer number (32039472).

Almost surely, 2^213520235 is an apocalyptic number.

213520235 is a deficient number, since it is larger than the sum of its proper divisors (42795541).

213520235 is a wasteful number, since it uses less digits than its factorization.

213520235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15253.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 213520235 is about 14612.3316072419. The cubic root of 213520235 is about 597.6950781936.

Adding to 213520235 its reverse (532025312), we get a palindrome (745545547).

The spelling of 213520235 in words is "two hundred thirteen million, five hundred twenty thousand, two hundred thirty-five".