1231022331017 has 2 divisors, whose sum is σ = 1231022331018. Its totient is φ = 1231022331016.

The previous prime is 1231022330999. The next prime is 1231022331031. The reversal of 1231022331017 is 7101332201321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088059696201 + 142962634816 = 1043101^2 + 378104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231022331017 - 2²⁶ = 1230955222153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231022331037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615511165508 + 615511165509.

It is an arithmetic number, because the mean of its divisors is an integer number (615511165509).

Almost surely, 2^{1231022331017} is an apocalyptic number.

It is an amenable number.

1231022331017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231022331017 is an equidigital number, since it uses as much as digits as its factorization.

1231022331017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 1231022331017 its reverse (7101332201321), we get a palindrome (8332354532338).

The spelling of 1231022331017 in words is "one trillion, two hundred thirty-one billion, twenty-two million, three hundred thirty-one thousand, seventeen".