1131245012 has 6 divisors (see below), whose sum is σ = 1979678778. Its totient is φ = 565622504.

The previous prime is 1131244999. The next prime is 1131245033. The reversal of 1131245012 is 2105421311.

It can be written as a sum of positive squares in only one way, i.e., 1128019396 + 3225616 = 33586^2 + 1796^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 141405623 + ... + 141405630.

It is an arithmetic number, because the mean of its divisors is an integer number (329946463).

Almost surely, 2^1131245012 is an apocalyptic number.

It is an amenable number.

1131245012 is a deficient number, since it is larger than the sum of its proper divisors (848433766).

1131245012 is a wasteful number, since it uses less digits than its factorization.

1131245012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282811257 (or 282811255 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1131245012 is about 33633.9859665785. The cubic root of 1131245012 is about 1041.9628279198.

Adding to 1131245012 its reverse (2105421311), we get a palindrome (3236666323).

The spelling of 1131245012 in words is "one billion, one hundred thirty-one million, two hundred forty-five thousand, twelve".