233311221023231 has 16 divisors (see below), whose sum is σ = 252970537881600. Its totient is φ = 213900999924960.

The previous prime is 233311221023227. The next prime is 233311221023263. The reversal of 233311221023231 is 132320122113332.

It is a cyclic number.

It is not a de Polignac number, because 233311221023231 - 2² = 233311221023227 is a prime.

It is a super-2 number, since 2×233311221023231² (a number of 30 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 = 233311221023194 and 233311221023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233311221023291) 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, 92114681 + ... + 94613618.

It is an arithmetic number, because the mean of its divisors is an integer number (15810658617600).

Almost surely, 2^{233311221023231} is an apocalyptic number.

233311221023231 is a deficient number, since it is larger than the sum of its proper divisors (19659316858369).

233311221023231 is a wasteful number, since it uses less digits than its factorization.

233311221023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186728966.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 233311221023231 its reverse (132320122113332), we get a palindrome (365631343136563).

The spelling of 233311221023231 in words is "two hundred thirty-three trillion, three hundred eleven billion, two hundred twenty-one million, twenty-three thousand, two hundred thirty-one".