235221404231 has 16 divisors (see below), whose sum is σ = 257328153600. Its totient is φ = 213235999200.

The previous prime is 235221404221. The next prime is 235221404251. The reversal of 235221404231 is 132404122532.

It is a cyclic number.

It is not a de Polignac number, because 235221404231 - 2¹⁴ = 235221387847 is a prime.

It is a super-2 number, since 2×235221404231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 235221404194 and 235221404203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235221404221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5733650 + ... + 5774528.

It is an arithmetic number, because the mean of its divisors is an integer number (16083009600).

Almost surely, 2^235221404231 is an apocalyptic number.

235221404231 is a deficient number, since it is larger than the sum of its proper divisors (22106749369).

235221404231 is a wasteful number, since it uses less digits than its factorization.

235221404231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42350.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 235221404231 its reverse (132404122532), we get a palindrome (367625526763).

The spelling of 235221404231 in words is "two hundred thirty-five billion, two hundred twenty-one million, four hundred four thousand, two hundred thirty-one".