1111231013 has 2 divisors, whose sum is σ = 1111231014. Its totient is φ = 1111231012.

The previous prime is 1111231003. The next prime is 1111231049. The reversal of 1111231013 is 3101321111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 738045889 + 373185124 = 27167^2 + 19318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111231013 - 2¹² = 1111226917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111231003) 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 as a sum of consecutive naturals, namely, 555615506 + 555615507.

It is an arithmetic number, because the mean of its divisors is an integer number (555615507).

Almost surely, 2^1111231013 is an apocalyptic number.

It is an amenable number.

1111231013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111231013 is an equidigital number, since it uses as much as digits as its factorization.

1111231013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1111231013 is about 33335.1318131487. The cubic root of 1111231013 is about 1035.7814236159.

Adding to 1111231013 its reverse (3101321111), we get a palindrome (4212552124).

The spelling of 1111231013 in words is "one billion, one hundred eleven million, two hundred thirty-one thousand, thirteen".