1131251012 has 6 divisors (see below), whose sum is σ = 1979689278. Its totient is φ = 565625504.

The previous prime is 1131250963. The next prime is 1131251029. The reversal of 1131251012 is 2101521311.

It can be written as a sum of positive squares in only one way, i.e., 707879236 + 423371776 = 26606^2 + 20576^2 .

It is a super-3 number, since 3×1131251012³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141406373 + ... + 141406380.

It is an arithmetic number, because the mean of its divisors is an integer number (329948213).

Almost surely, 2^1131251012 is an apocalyptic number.

It is an amenable number.

1131251012 is a deficient number, since it is larger than the sum of its proper divisors (848438266).

1131251012 is a wasteful number, since it uses less digits than its factorization.

1131251012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282812757 (or 282812755 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1131251012 is about 33634.0751619544. The cubic root of 1131251012 is about 1041.9646700689.

Adding to 1131251012 its reverse (2101521311), we get a palindrome (3232772323).

The spelling of 1131251012 in words is "one billion, one hundred thirty-one million, two hundred fifty-one thousand, twelve".