1163231100 has 108 divisors (see below), whose sum is σ = 3675153664. Its totient is φ = 307722240.

The previous prime is 1163231063. The next prime is 1163231101. The reversal of 1163231100 is 11323611.

1163231100 is a `hidden beast` number, since 1 + 1 + 632 + 31 + 1 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163231101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 109212 + ... + 119388.

Almost surely, 2^1163231100 is an apocalyptic number.

1163231100 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 1163231100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1837576832).

1163231100 is an abundant number, since it is smaller than the sum of its proper divisors (2511922564).

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

1163231100 is a wasteful number, since it uses less digits than its factorization.

1163231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324 (or 10314 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1163231100 is about 34106.1739278976. The cubic root of 1163231100 is about 1051.6922372195.

Adding to 1163231100 its reverse (11323611), we get a palindrome (1174554711).

The spelling of 1163231100 in words is "one billion, one hundred sixty-three million, two hundred thirty-one thousand, one hundred".