1011013505 has 4 divisors (see below), whose sum is σ = 1213216212. Its totient is φ = 808810800.

The previous prime is 1011013501. The next prime is 1011013513. The reversal of 1011013505 is 5053101101.

1011013505 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 358875136 + 652138369 = 18944^2 + 25537^2 .

It is not a de Polignac number, because 1011013505 - 2² = 1011013501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011013501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101101346 + ... + 101101355.

It is an arithmetic number, because the mean of its divisors is an integer number (303304053).

Almost surely, 2^1011013505 is an apocalyptic number.

It is an amenable number.

1011013505 is a deficient number, since it is larger than the sum of its proper divisors (202202707).

1011013505 is an equidigital number, since it uses as much as digits as its factorization.

1011013505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202202706.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 1011013505 is about 31796.4385584298. The cubic root of 1011013505 is about 1003.6577727193.

Adding to 1011013505 its reverse (5053101101), we get a palindrome (6064114606).

The spelling of 1011013505 in words is "one billion, eleven million, thirteen thousand, five hundred five".