233720981393 has 2 divisors, whose sum is σ = 233720981394. Its totient is φ = 233720981392.

The previous prime is 233720981353. The next prime is 233720981411. The reversal of 233720981393 is 393189027332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163901903104 + 69819078289 = 404848^2 + 264233^2 .

It is a cyclic number.

It is not a de Polignac number, because 233720981393 - 2¹⁸ = 233720719249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (233720981353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116860490696 + 116860490697.

It is an arithmetic number, because the mean of its divisors is an integer number (116860490697).

Almost surely, 2^233720981393 is an apocalyptic number.

It is an amenable number.

233720981393 is a deficient number, since it is larger than the sum of its proper divisors (1).

233720981393 is an equidigital number, since it uses as much as digits as its factorization.

233720981393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 233720981393 in words is "two hundred thirty-three billion, seven hundred twenty million, nine hundred eighty-one thousand, three hundred ninety-three".