2123322331 has 4 divisors (see below), whose sum is σ = 2286654832. Its totient is φ = 1959989832.

The previous prime is 2123322323. The next prime is 2123322353. The reversal of 2123322331 is 1332233212.

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 2123322331 - 2³ = 2123322323 is a prime.

It is a super-2 number, since 2×2123322331² = 9016995442646547122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123322931) 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, 81666231 + ... + 81666256.

It is an arithmetic number, because the mean of its divisors is an integer number (571663708).

Almost surely, 2^2123322331 is an apocalyptic number.

2123322331 is a deficient number, since it is larger than the sum of its proper divisors (163332501).

2123322331 is a wasteful number, since it uses less digits than its factorization.

2123322331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163332500.

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

The square root of 2123322331 is about 46079.5218182654. The cubic root of 2123322331 is about 1285.3023721810.

Adding to 2123322331 its reverse (1332233212), we get a palindrome (3455555543).

The spelling of 2123322331 in words is "two billion, one hundred twenty-three million, three hundred twenty-two thousand, three hundred thirty-one".