1152111305 has 4 divisors (see below), whose sum is σ = 1382533572. Its totient is φ = 921689040.

The previous prime is 1152111299. The next prime is 1152111313. The reversal of 1152111305 is 5031112511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5031112511 = 21017 ⋅239383.

It can be written as a sum of positive squares in 2 ways, for example, as 164454976 + 987656329 = 12824^2 + 31427^2 .

It is not a de Polignac number, because 1152111305 - 2⁶ = 1152111241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115211126 + ... + 115211135.

It is an arithmetic number, because the mean of its divisors is an integer number (345633393).

Almost surely, 2^1152111305 is an apocalyptic number.

It is an amenable number.

1152111305 is a deficient number, since it is larger than the sum of its proper divisors (230422267).

1152111305 is an equidigital number, since it uses as much as digits as its factorization.

1152111305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230422266.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1152111305 is about 33942.7651348561. The cubic root of 1152111305 is about 1048.3303183580.

Adding to 1152111305 its reverse (5031112511), we get a palindrome (6183223816).

The spelling of 1152111305 in words is "one billion, one hundred fifty-two million, one hundred eleven thousand, three hundred five".