1150231111 has 4 divisors (see below), whose sum is σ = 1160783800. Its totient is φ = 1139678424.

The previous prime is 1150231091. The next prime is 1150231133. The reversal of 1150231111 is 1111320511.

It is a happy number.

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 1150231111 - 2⁵ = 1150231079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150231211) 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 3 ways as a sum of consecutive naturals, for example, 5276181 + ... + 5276398.

It is an arithmetic number, because the mean of its divisors is an integer number (290195950).

Almost surely, 2^1150231111 is an apocalyptic number.

1150231111 is a deficient number, since it is larger than the sum of its proper divisors (10552689).

1150231111 is a wasteful number, since it uses less digits than its factorization.

1150231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552688.

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

The square root of 1150231111 is about 33915.0572902361. The cubic root of 1150231111 is about 1047.7597318273.

Adding to 1150231111 its reverse (1111320511), we get a palindrome (2261551622).

The spelling of 1150231111 in words is "one billion, one hundred fifty million, two hundred thirty-one thousand, one hundred eleven".