1171031 has 2 divisors, whose sum is σ = 1171032. Its totient is φ = 1171030.

The previous prime is 1170979. The next prime is 1171033. The reversal of 1171031 is 1301711.

It is a strong prime.

It is an emirp because it is prime and its reverse (1301711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1171031 - 2¹⁰ = 1170007 is a prime.

It is a super-2 number, since 2×1171031² = 2742627205922, which contains 22 as substring.

Together with 1171033, 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 = 1170997 and 1171015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171033) 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, 585515 + 585516.

It is an arithmetic number, because the mean of its divisors is an integer number (585516).

2^1171031 is an apocalyptic number.

1171031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171031 is an equidigital number, since it uses as much as digits as its factorization.

1171031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21, while the sum is 14.

The square root of 1171031 is about 1082.1418576139. The cubic root of 1171031 is about 105.4037666068.

Adding to 1171031 its reverse (1301711), we get a palindrome (2472742).

The spelling of 1171031 in words is "one million, one hundred seventy-one thousand, thirty-one".