11233320231 has 32 divisors (see below), whose sum is σ = 18145520640. Its totient is φ = 6034392576.

The previous prime is 11233320191. The next prime is 11233320253. The reversal of 11233320231 is 13202333211.

It is not a de Polignac number, because 11233320231 - 2⁷ = 11233320103 is a prime.

It is a super-3 number, since 3×11233320231³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 11233320198 and 11233320207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233325231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295150 + ... + 331028.

It is an arithmetic number, because the mean of its divisors is an integer number (567047520).

Almost surely, 2^11233320231 is an apocalyptic number.

11233320231 is a deficient number, since it is larger than the sum of its proper divisors (6912200409).

11233320231 is a wasteful number, since it uses less digits than its factorization.

11233320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36783.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 11233320231 its reverse (13202333211), we get a palindrome (24435653442).

The spelling of 11233320231 in words is "eleven billion, two hundred thirty-three million, three hundred twenty thousand, two hundred thirty-one".