1111313143 has 2 divisors, whose sum is σ = 1111313144. Its totient is φ = 1111313142.

The previous prime is 1111313117. The next prime is 1111313191. The reversal of 1111313143 is 3413131111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111313143 - 2⁵ = 1111313111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111313143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111311143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555656571 + 555656572.

It is an arithmetic number, because the mean of its divisors is an integer number (555656572).

Almost surely, 2^1111313143 is an apocalyptic number.

1111313143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111313143 is an equidigital number, since it uses as much as digits as its factorization.

1111313143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 19.

The square root of 1111313143 is about 33336.3636739222. The cubic root of 1111313143 is about 1035.8069408521.

Adding to 1111313143 its reverse (3413131111), we get a palindrome (4524444254).

The spelling of 1111313143 in words is "one billion, one hundred eleven million, three hundred thirteen thousand, one hundred forty-three".