1011231017 has 2 divisors, whose sum is σ = 1011231018. Its totient is φ = 1011231016.

The previous prime is 1011230993. The next prime is 1011231019. The reversal of 1011231017 is 7101321101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745508416 + 265722601 = 27304^2 + 16301^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011231017 - 2²² = 1007036713 is a prime.

Together with 1011231019, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011230986 and 1011231004.

It is not a weakly prime, because it can be changed into another prime (1011231019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505615508 + 505615509.

It is an arithmetic number, because the mean of its divisors is an integer number (505615509).

Almost surely, 2^1011231017 is an apocalyptic number.

It is an amenable number.

1011231017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011231017 is an equidigital number, since it uses as much as digits as its factorization.

1011231017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 1011231017 is about 31799.8587575480. The cubic root of 1011231017 is about 1003.7297440479.

Adding to 1011231017 its reverse (7101321101), we get a palindrome (8112552118).

The spelling of 1011231017 in words is "one billion, eleven million, two hundred thirty-one thousand, seventeen".