2333231981 has 2 divisors, whose sum is σ = 2333231982. Its totient is φ = 2333231980.

The previous prime is 2333231959. The next prime is 2333232001. The reversal of 2333231981 is 1891323332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1744732900 + 588499081 = 41770^2 + 24259^2 .

It is a cyclic number.

It is not a de Polignac number, because 2333231981 - 2¹⁰ = 2333230957 is a prime.

It is a super-2 number, since 2×2333231981² = 10887942954322368722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2333239981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1166615990 + 1166615991.

It is an arithmetic number, because the mean of its divisors is an integer number (1166615991).

Almost surely, 2^2333231981 is an apocalyptic number.

It is an amenable number.

2333231981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2333231981 is an equidigital number, since it uses as much as digits as its factorization.

2333231981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 2333231981 is about 48303.5400462533. The cubic root of 2333231981 is about 1326.3331982240. Note that the first 3 decimals are identical.

The spelling of 2333231981 in words is "two billion, three hundred thirty-three million, two hundred thirty-one thousand, nine hundred eighty-one".