233820257 has 8 divisors (see below), whose sum is σ = 256703232. Its totient is φ = 211208400.

The previous prime is 233820239. The next prime is 233820263. The reversal of 233820257 is 752028332.

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 233820257 - 2¹² = 233816161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233820287) 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, 65969 + ... + 69422.

It is an arithmetic number, because the mean of its divisors is an integer number (32087904).

Almost surely, 2^233820257 is an apocalyptic number.

It is an amenable number.

233820257 is a deficient number, since it is larger than the sum of its proper divisors (22882975).

233820257 is a wasteful number, since it uses less digits than its factorization.

233820257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135559.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 233820257 is about 15291.1823283878. The cubic root of 233820257 is about 616.0661937989.

Adding to 233820257 its reverse (752028332), we get a palindrome (985848589).

The spelling of 233820257 in words is "two hundred thirty-three million, eight hundred twenty thousand, two hundred fifty-seven".