231120222317 has 2 divisors, whose sum is σ = 231120222318. Its totient is φ = 231120222316.

The previous prime is 231120222301. The next prime is 231120222323. The reversal of 231120222317 is 713222021132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191236537636 + 39883684681 = 437306^2 + 199709^2 .

It is a cyclic number.

It is not a de Polignac number, because 231120222317 - 2⁴ = 231120222301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231120222367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115560111158 + 115560111159.

It is an arithmetic number, because the mean of its divisors is an integer number (115560111159).

Almost surely, 2^231120222317 is an apocalyptic number.

It is an amenable number.

231120222317 is a deficient number, since it is larger than the sum of its proper divisors (1).

231120222317 is an equidigital number, since it uses as much as digits as its factorization.

231120222317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 231120222317 its reverse (713222021132), we get a palindrome (944342243449).

The spelling of 231120222317 in words is "two hundred thirty-one billion, one hundred twenty million, two hundred twenty-two thousand, three hundred seventeen".