1311012232 has 16 divisors (see below), whose sum is σ = 2460807900. Its totient is φ = 654796800.

The previous prime is 1311012223. The next prime is 1311012233. The reversal of 1311012232 is 2322101131.

It can be written as a sum of positive squares in 2 ways, for example, as 1305087876 + 5924356 = 36126^2 + 2434^2 .

It is not an unprimeable number, because it can be changed into a prime (1311012233) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 80769 + ... + 95632.

Almost surely, 2^1311012232 is an apocalyptic number.

It is an amenable number.

1311012232 is a deficient number, since it is larger than the sum of its proper divisors (1149795668).

1311012232 is a wasteful number, since it uses less digits than its factorization.

1311012232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177336 (or 177332 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311012232 is about 36207.9028942578. The cubic root of 1311012232 is about 1094.4659327868.

Adding to 1311012232 its reverse (2322101131), we get a palindrome (3633113363).

The spelling of 1311012232 in words is "one billion, three hundred eleven million, twelve thousand, two hundred thirty-two".