1115513101 has 16 divisors (see below), whose sum is σ = 1190764800. Its totient is φ = 1043235648.

The previous prime is 1115513099. The next prime is 1115513107. The reversal of 1115513101 is 1013155111.

It is a cyclic number.

It is not a de Polignac number, because 1115513101 - 2¹ = 1115513099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115513107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116830 + ... + 126016.

It is an arithmetic number, because the mean of its divisors is an integer number (74422800).

Almost surely, 2^1115513101 is an apocalyptic number.

It is an amenable number.

1115513101 is a deficient number, since it is larger than the sum of its proper divisors (75251699).

1115513101 is an equidigital number, since it uses as much as digits as its factorization.

1115513101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348.

The product of its (nonzero) digits is 75, while the sum is 19.

The square root of 1115513101 is about 33399.2979117825. The cubic root of 1115513101 is about 1037.1101669105.

Adding to 1115513101 its reverse (1013155111), we get a palindrome (2128668212).

The spelling of 1115513101 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, one hundred one".