1150431128 has 64 divisors (see below), whose sum is σ = 2721841920. Its totient is φ = 442800000.

The previous prime is 1150431097. The next prime is 1150431179. The reversal of 1150431128 is 8211340511.

It is a junction number, because it is equal to n+sod(n) for n = 1150431097 and 1150431106.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 39878 + ... + 62378.

It is an arithmetic number, because the mean of its divisors is an integer number (42528780).

Almost surely, 2^1150431128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1150431128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360920960).

1150431128 is an abundant number, since it is smaller than the sum of its proper divisors (1571410792).

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

1150431128 is a wasteful number, since it uses less digits than its factorization.

1150431128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22608 (or 22604 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1150431128 is about 33918.0059555393. The cubic root of 1150431128 is about 1047.8204609596.

Adding to 1150431128 its reverse (8211340511), we get a palindrome (9361771639).

The spelling of 1150431128 in words is "one billion, one hundred fifty million, four hundred thirty-one thousand, one hundred twenty-eight".