23133313331 has 4 divisors (see below), whose sum is σ = 23338033032. Its totient is φ = 22928593632.

The previous prime is 23133313327. The next prime is 23133313349. The reversal of 23133313331 is 13331333132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23133313331 - 2² = 23133313327 is a prime.

It is a super-2 number, since 2×23133313331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23133313331.

It is not an unprimeable number, because it can be changed into a prime (23133313321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102359681 + ... + 102359906.

It is an arithmetic number, because the mean of its divisors is an integer number (5834508258).

Almost surely, 2^23133313331 is an apocalyptic number.

23133313331 is a deficient number, since it is larger than the sum of its proper divisors (204719701).

23133313331 is a wasteful number, since it uses less digits than its factorization.

23133313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204719700.

The product of its digits is 4374, while the sum is 26.

Adding to 23133313331 its reverse (13331333132), we get a palindrome (36464646463).

The spelling of 23133313331 in words is "twenty-three billion, one hundred thirty-three million, three hundred thirteen thousand, three hundred thirty-one".