1131231130 has 32 divisors (see below), whose sum is σ = 2117229840. Its totient is φ = 434649600.

The previous prime is 1131231121. The next prime is 1131231151. The reversal of 1131231130 is 311321311.

It can be written as a sum of positive squares in 8 ways, for example, as 425638161 + 705592969 = 20631^2 + 26563^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47230 + ... + 67030.

Almost surely, 2^1131231130 is an apocalyptic number.

1131231130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131231130 is a deficient number, since it is larger than the sum of its proper divisors (985998710).

1131231130 is a wasteful number, since it uses less digits than its factorization.

1131231130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20034.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1131231130 is about 33633.7795973037. The cubic root of 1131231130 is about 1041.9585657759.

Adding to 1131231130 its reverse (311321311), we get a palindrome (1442552441).

The spelling of 1131231130 in words is "one billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred thirty".