1205310115 has 16 divisors (see below), whose sum is σ = 1557416160. Its totient is φ = 892142080.

The previous prime is 1205310109. The next prime is 1205310121. The reversal of 1205310115 is 5110135021.

It is an interprime number because it is at equal distance from previous prime (1205310109) and next prime (1205310121).

It is not a de Polignac number, because 1205310115 - 2³ = 1205310107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1205310092 and 1205310101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115156 + ... + 125185.

It is an arithmetic number, because the mean of its divisors is an integer number (97338510).

Almost surely, 2^1205310115 is an apocalyptic number.

1205310115 is a deficient number, since it is larger than the sum of its proper divisors (352106045).

1205310115 is a wasteful number, since it uses less digits than its factorization.

1205310115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240422.

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

The square root of 1205310115 is about 34717.5764563139. The cubic root of 1205310115 is about 1064.2237181387.

Adding to 1205310115 its reverse (5110135021), we get a palindrome (6315445136).

The spelling of 1205310115 in words is "one billion, two hundred five million, three hundred ten thousand, one hundred fifteen".