1171013 has 4 divisors (see below), whose sum is σ = 1202700. Its totient is φ = 1139328.

The previous prime is 1170979. The next prime is 1171031. The reversal of 1171013 is 3101711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3101711 = 23 ⋅134857.

It can be written as a sum of positive squares in 2 ways, for example, as 1036324 + 134689 = 1018^2 + 367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1171013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15788 + ... + 15861.

It is an arithmetic number, because the mean of its divisors is an integer number (300675).

2^1171013 is an apocalyptic number.

It is an amenable number.

1171013 is a deficient number, since it is larger than the sum of its proper divisors (31687).

1171013 is an equidigital number, since it uses as much as digits as its factorization.

1171013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31686.

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

The square root of 1171013 is about 1082.1335407425. The cubic root of 1171013 is about 105.4032265478.

Adding to 1171013 its reverse (3101711), we get a palindrome (4272724).

The spelling of 1171013 in words is "one million, one hundred seventy-one thousand, thirteen".