1155305313 has 6 divisors (see below), whose sum is σ = 1668774354. Its totient is φ = 770203536.

The previous prime is 1155305309. The next prime is 1155305383. The reversal of 1155305313 is 3135035511.

1155305313 is a `hidden beast` number, since 115 + 530 + 5 + 3 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1053456849 + 101848464 = 32457^2 + 10092^2 .

It is not a de Polignac number, because 1155305313 - 2² = 1155305309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155305383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64183620 + ... + 64183637.

It is an arithmetic number, because the mean of its divisors is an integer number (278129059).

Almost surely, 2^1155305313 is an apocalyptic number.

It is an amenable number.

1155305313 is a deficient number, since it is larger than the sum of its proper divisors (513469041).

1155305313 is a wasteful number, since it uses less digits than its factorization.

1155305313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128367263 (or 128367260 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 27.

The square root of 1155305313 is about 33989.7824794452. The cubic root of 1155305313 is about 1049.2981895242.

The spelling of 1155305313 in words is "one billion, one hundred fifty-five million, three hundred five thousand, three hundred thirteen".