235221320 has 32 divisors (see below), whose sum is σ = 547500600. Its totient is φ = 90843648.

The previous prime is 235221281. The next prime is 235221361. The reversal of 235221320 is 23122532.

It can be written as a sum of positive squares in 4 ways, for example, as 185123236 + 50098084 = 13606^2 + 7078^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 235221292 and 235221301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100229 + ... + 102548.

Almost surely, 2^235221320 is an apocalyptic number.

235221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235221320 is an abundant number, since it is smaller than the sum of its proper divisors (312279280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

235221320 is a wasteful number, since it uses less digits than its factorization.

235221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202817 (or 202813 counting only the distinct ones).

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

The square root of 235221320 is about 15336.9266804011. The cubic root of 235221320 is about 617.2942443092.

Adding to 235221320 its reverse (23122532), we get a palindrome (258343852).

It can be divided in two parts, 23522 and 1320, that added together give a palindrome (24842).

The spelling of 235221320 in words is "two hundred thirty-five million, two hundred twenty-one thousand, three hundred twenty".