1155321113 has 8 divisors (see below), whose sum is σ = 1194014976. Its totient is φ = 1116716400.

The previous prime is 1155321109. The next prime is 1155321179. The reversal of 1155321113 is 3111235511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155321113 - 2² = 1155321109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155324113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4598 + ... + 48288.

It is an arithmetic number, because the mean of its divisors is an integer number (149251872).

Almost surely, 2^1155321113 is an apocalyptic number.

It is an amenable number.

1155321113 is a deficient number, since it is larger than the sum of its proper divisors (38693863).

1155321113 is an equidigital number, since it uses as much as digits as its factorization.

1155321113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44575.

The product of its digits is 450, while the sum is 23.

The square root of 1155321113 is about 33990.0149014383. The cubic root of 1155321113 is about 1049.3029729165.

Adding to 1155321113 its reverse (3111235511), we get a palindrome (4266556624).

The spelling of 1155321113 in words is "one billion, one hundred fifty-five million, three hundred twenty-one thousand, one hundred thirteen".