123233333331 has 4 divisors (see below), whose sum is σ = 164311111112. Its totient is φ = 82155555552.

The previous prime is 123233333221. The next prime is 123233333369. The reversal of 123233333331 is 133333332321.

It is a happy number.

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

It is not a de Polignac number, because 123233333331 - 2²⁵ = 123199778899 is a prime.

It is a super-2 number, since 2×123233333331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123233333831) 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, 20538888886 + ... + 20538888891.

It is an arithmetic number, because the mean of its divisors is an integer number (41077777778).

Almost surely, 2^123233333331 is an apocalyptic number.

123233333331 is a deficient number, since it is larger than the sum of its proper divisors (41077777781).

123233333331 is an equidigital number, since it uses as much as digits as its factorization.

123233333331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41077777780.

The product of its digits is 26244, while the sum is 30.

Adding to 123233333331 its reverse (133333332321), we get a palindrome (256566665652).

The spelling of 123233333331 in words is "one hundred twenty-three billion, two hundred thirty-three million, three hundred thirty-three thousand, three hundred thirty-one".