235513213 has 4 divisors (see below), whose sum is σ = 253629628. Its totient is φ = 217396800.

The previous prime is 235513207. The next prime is 235513217. The reversal of 235513213 is 312315532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121066009 + 114447204 = 11003^2 + 10698^2 .

It is a cyclic number.

It is not a de Polignac number, because 235513213 - 2⁹ = 235512701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235513217) 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, 9058188 + ... + 9058213.

It is an arithmetic number, because the mean of its divisors is an integer number (63407407).

Almost surely, 2^235513213 is an apocalyptic number.

It is an amenable number.

235513213 is a deficient number, since it is larger than the sum of its proper divisors (18116415).

235513213 is a wasteful number, since it uses less digits than its factorization.

235513213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18116414.

The product of its digits is 2700, while the sum is 25.

The square root of 235513213 is about 15346.4397499876. The cubic root of 235513213 is about 617.5494782429.

Adding to 235513213 its reverse (312315532), we get a palindrome (547828745).

The spelling of 235513213 in words is "two hundred thirty-five million, five hundred thirteen thousand, two hundred thirteen".