1131343012 has 24 divisors (see below), whose sum is σ = 2098083960. Its totient is φ = 532842240.

The previous prime is 1131343007. The next prime is 1131343019. The reversal of 1131343012 is 2103431311.

It can be written as a sum of positive squares in 4 ways, for example, as 197796096 + 933546916 = 14064^2 + 30554^2 .

It is not an unprimeable number, because it can be changed into a prime (1131343019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114183 + ... + 123694.

It is an arithmetic number, because the mean of its divisors is an integer number (87420165).

Almost surely, 2^1131343012 is an apocalyptic number.

It is an amenable number.

1131343012 is a deficient number, since it is larger than the sum of its proper divisors (966740948).

1131343012 is a wasteful number, since it uses less digits than its factorization.

1131343012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237951 (or 237949 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1131343012 is about 33635.4427947664. The cubic root of 1131343012 is about 1041.9929155394.

Adding to 1131343012 its reverse (2103431311), we get a palindrome (3234774323).

The spelling of 1131343012 in words is "one billion, one hundred thirty-one million, three hundred forty-three thousand, twelve".