1113015205 has 4 divisors (see below), whose sum is σ = 1335618252. Its totient is φ = 890412160.

The previous prime is 1113015203. The next prime is 1113015223. The reversal of 1113015205 is 5025103111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5025103111 = 7 ⋅717871873.

It can be written as a sum of positive squares in 2 ways, for example, as 719151489 + 393863716 = 26817^2 + 19846^2 .

It is not a de Polignac number, because 1113015205 - 2¹ = 1113015203 is a prime.

It is a super-2 number, since 2×1113015205² = 2477605693122384050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113015203) 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, 111301516 + ... + 111301525.

It is an arithmetic number, because the mean of its divisors is an integer number (333904563).

Almost surely, 2^1113015205 is an apocalyptic number.

It is an amenable number.

1113015205 is a deficient number, since it is larger than the sum of its proper divisors (222603047).

1113015205 is an equidigital number, since it uses as much as digits as its factorization.

1113015205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222603046.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1113015205 is about 33361.8825158293. The cubic root of 1113015205 is about 1036.3354772503.

Adding to 1113015205 its reverse (5025103111), we get a palindrome (6138118316).

It can be divided in two parts, 11130 and 15205, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 1113015205 in words is "one billion, one hundred thirteen million, fifteen thousand, two hundred five".