231220233122393 has 2 divisors, whose sum is σ = 231220233122394. Its totient is φ = 231220233122392.

The previous prime is 231220233122323. The next prime is 231220233122401. The reversal of 231220233122393 is 393221332022132.

231220233122393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143767006322944 + 87453226799449 = 11990288^2 + 9351643^2 .

It is a cyclic number.

It is not a de Polignac number, because 231220233122393 - 2¹⁸ = 231220232860249 is a prime.

It is not a weakly prime, because it can be changed into another prime (231220233122303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115610116561196 + 115610116561197.

It is an arithmetic number, because the mean of its divisors is an integer number (115610116561197).

Almost surely, 2^{231220233122393} is an apocalyptic number.

It is an amenable number.

231220233122393 is a deficient number, since it is larger than the sum of its proper divisors (1).

231220233122393 is an equidigital number, since it uses as much as digits as its factorization.

231220233122393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 231220233122393 in words is "two hundred thirty-one trillion, two hundred twenty billion, two hundred thirty-three million, one hundred twenty-two thousand, three hundred ninety-three".