1155113315 has 4 divisors (see below), whose sum is σ = 1386135984. Its totient is φ = 924090648.

The previous prime is 1155113287. The next prime is 1155113321. The reversal of 1155113315 is 5133115511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1155113315 - 2⁶ = 1155113251 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, 115511327 + ... + 115511336.

It is an arithmetic number, because the mean of its divisors is an integer number (346533996).

Almost surely, 2^1155113315 is an apocalyptic number.

1155113315 is a deficient number, since it is larger than the sum of its proper divisors (231022669).

1155113315 is an equidigital number, since it uses as much as digits as its factorization.

1155113315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231022668.

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

The square root of 1155113315 is about 33986.9580133321. The cubic root of 1155113315 is about 1049.2400593448.

Adding to 1155113315 its reverse (5133115511), we get a palindrome (6288228826).

The spelling of 1155113315 in words is "one billion, one hundred fifty-five million, one hundred thirteen thousand, three hundred fifteen".