1115231110 has 64 divisors (see below), whose sum is σ = 2434199040. Its totient is φ = 359124480.

The previous prime is 1115231099. The next prime is 1115231111. The reversal of 1115231110 is 111325111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115231111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1021665 + ... + 1022755.

It is an arithmetic number, because the mean of its divisors is an integer number (38034360).

Almost surely, 2^1115231110 is an apocalyptic number.

1115231110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1115231110 is an abundant number, since it is smaller than the sum of its proper divisors (1318967930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1115231110 is a wasteful number, since it uses less digits than its factorization.

1115231110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 1115231110 is about 33395.0761340650. The cubic root of 1115231110 is about 1037.0227690486.

Adding to 1115231110 its reverse (111325111), we get a palindrome (1226556221).

The spelling of 1115231110 in words is "one billion, one hundred fifteen million, two hundred thirty-one thousand, one hundred ten".