1131230120 has 16 divisors (see below), whose sum is σ = 2545267860. Its totient is φ = 452492032.

The previous prime is 1131230117. The next prime is 1131230147. The reversal of 1131230120 is 210321311.

It can be written as a sum of positive squares in 2 ways, for example, as 1119437764 + 11792356 = 33458^2 + 3434^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1131230095 and 1131230104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14140337 + ... + 14140416.

Almost surely, 2^1131230120 is an apocalyptic number.

1131230120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131230120 is an abundant number, since it is smaller than the sum of its proper divisors (1414037740).

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

1131230120 is a wasteful number, since it uses less digits than its factorization.

1131230120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28280764 (or 28280760 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1131230120 is about 33633.7645826333. The cubic root of 1131230120 is about 1041.9582556776.

Adding to 1131230120 its reverse (210321311), we get a palindrome (1341551431).

The spelling of 1131230120 in words is "one billion, one hundred thirty-one million, two hundred thirty thousand, one hundred twenty".