2131223233 has 4 divisors (see below), whose sum is σ = 2180786608. Its totient is φ = 2081659860.

The previous prime is 2131223219. The next prime is 2131223239. The reversal of 2131223233 is 3323221312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131223233 - 2⁵ = 2131223201 is a prime.

It is a super-2 number, since 2×2131223233² = 9084224937757944578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131223239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24781623 + ... + 24781708.

It is an arithmetic number, because the mean of its divisors is an integer number (545196652).

Almost surely, 2^2131223233 is an apocalyptic number.

It is an amenable number.

2131223233 is a deficient number, since it is larger than the sum of its proper divisors (49563375).

2131223233 is an equidigital number, since it uses as much as digits as its factorization.

2131223233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49563374.

The product of its digits is 1296, while the sum is 22.

The square root of 2131223233 is about 46165.1733777747. The cubic root of 2131223233 is about 1286.8946062369.

Adding to 2131223233 its reverse (3323221312), we get a palindrome (5454444545).

The spelling of 2131223233 in words is "two billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty-three".