1155151313 has 4 divisors (see below), whose sum is σ = 1156364388. Its totient is φ = 1153938240.

The previous prime is 1155151307. The next prime is 1155151339. The reversal of 1155151313 is 3131515511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3131515511 = 49807 ⋅62873.

It can be written as a sum of positive squares in 2 ways, for example, as 394936129 + 760215184 = 19873^2 + 27572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155151313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1155151013) 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, 605108 + ... + 607013.

It is an arithmetic number, because the mean of its divisors is an integer number (289091097).

Almost surely, 2^1155151313 is an apocalyptic number.

It is an amenable number.

1155151313 is a deficient number, since it is larger than the sum of its proper divisors (1213075).

1155151313 is an equidigital number, since it uses as much as digits as its factorization.

1155151313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213074.

The product of its digits is 1125, while the sum is 26.

The square root of 1155151313 is about 33987.5170172815. The cubic root of 1155151313 is about 1049.2515643017.

Adding to 1155151313 its reverse (3131515511), we get a palindrome (4286666824).

The spelling of 1155151313 in words is "one billion, one hundred fifty-five million, one hundred fifty-one thousand, three hundred thirteen".