1155130311 has 16 divisors (see below), whose sum is σ = 1629780480. Its totient is φ = 726227040.

The previous prime is 1155130279. The next prime is 1155130381. The reversal of 1155130311 is 1130315511.

It is not a de Polignac number, because 1155130311 - 2⁵ = 1155130279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155130381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112996 + ... + 122793.

It is an arithmetic number, because the mean of its divisors is an integer number (101861280).

Almost surely, 2^1155130311 is an apocalyptic number.

1155130311 is a deficient number, since it is larger than the sum of its proper divisors (474650169).

1155130311 is a wasteful number, since it uses less digits than its factorization.

1155130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235886.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 1155130311 is about 33987.2080495000. The cubic root of 1155130311 is about 1049.2452053902.

Adding to 1155130311 its reverse (1130315511), we get a palindrome (2285445822).

The spelling of 1155130311 in words is "one billion, one hundred fifty-five million, one hundred thirty thousand, three hundred eleven".