1150531100 has 108 divisors (see below), whose sum is σ = 2701327104. Its totient is φ = 423843840.

The previous prime is 1150531051. The next prime is 1150531121. The reversal of 1150531100 is 11350511.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9059237 + ... + 9059363.

It is an arithmetic number, because the mean of its divisors is an integer number (25012288).

Almost surely, 2^1150531100 is an apocalyptic number.

1150531100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1150531100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1350663552).

1150531100 is an abundant number, since it is smaller than the sum of its proper divisors (1550796004).

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

1150531100 is a wasteful number, since it uses less digits than its factorization.

1150531100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 1150531100 is about 33919.4796540277. The cubic root of 1150531100 is about 1047.8508118053.

Adding to 1150531100 its reverse (11350511), we get a palindrome (1161881611).

The spelling of 1150531100 in words is "one billion, one hundred fifty million, five hundred thirty-one thousand, one hundred".