235220321 has 8 divisors (see below), whose sum is σ = 275380224. Its totient is φ = 196699680.

The previous prime is 235220309. The next prime is 235220357. The reversal of 235220321 is 123022532.

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 235220321 - 2²² = 231026017 is a prime.

It is a super-2 number, since 2×235220321² = 110657198822686082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 235220293 and 235220302.

It is not an unprimeable number, because it can be changed into a prime (235220371) 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, 409505 + ... + 410078.

It is an arithmetic number, because the mean of its divisors is an integer number (34422528).

Almost surely, 2^235220321 is an apocalyptic number.

It is an amenable number.

235220321 is a deficient number, since it is larger than the sum of its proper divisors (40159903).

235220321 is an equidigital number, since it uses as much as digits as its factorization.

235220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819631.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 235220321 is about 15336.8941119120. The cubic root of 235220321 is about 617.2933704119.

Adding to 235220321 its reverse (123022532), we get a palindrome (358242853).

The spelling of 235220321 in words is "two hundred thirty-five million, two hundred twenty thousand, three hundred twenty-one".