1111241513 has 4 divisors (see below), whose sum is σ = 1132208388. Its totient is φ = 1090274640.

The previous prime is 1111241503. The next prime is 1111241587. The reversal of 1111241513 is 3151421111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 735928384 + 375313129 = 27128^2 + 19373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111241513 - 2⁶ = 1111241449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1111241503) 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 in 3 ways as a sum of consecutive naturals, for example, 10483358 + ... + 10483463.

It is an arithmetic number, because the mean of its divisors is an integer number (283052097).

Almost surely, 2^1111241513 is an apocalyptic number.

It is an amenable number.

1111241513 is a deficient number, since it is larger than the sum of its proper divisors (20966875).

1111241513 is an equidigital number, since it uses as much as digits as its factorization.

1111241513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20966874.

The product of its digits is 120, while the sum is 20.

The square root of 1111241513 is about 33335.2893042793. The cubic root of 1111241513 is about 1035.7846859651.

Adding to 1111241513 its reverse (3151421111), we get a palindrome (4262662624).

It can be divided in two parts, 11112 and 41513, that added together give a palindrome (52625).

The spelling of 1111241513 in words is "one billion, one hundred eleven million, two hundred forty-one thousand, five hundred thirteen".