235218813 has 8 divisors (see below), whose sum is σ = 315623328. Its totient is φ = 155813424.

The previous prime is 235218773. The next prime is 235218829. The reversal of 235218813 is 318812532.

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

It is not a de Polignac number, because 235218813 - 2¹² = 235214717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235218853) 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, 249231 + ... + 250172.

It is an arithmetic number, because the mean of its divisors is an integer number (39452916).

Almost surely, 2^235218813 is an apocalyptic number.

It is an amenable number.

235218813 is a deficient number, since it is larger than the sum of its proper divisors (80404515).

235218813 is a wasteful number, since it uses less digits than its factorization.

235218813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499563.

The product of its digits is 11520, while the sum is 33.

The square root of 235218813 is about 15336.8449493369. The cubic root of 235218813 is about 617.2920512510.

The spelling of 235218813 in words is "two hundred thirty-five million, two hundred eighteen thousand, eight hundred thirteen".