1311022312 has 16 divisors (see below), whose sum is σ = 2458648800. Its totient is φ = 655382640.

The previous prime is 1311022283. The next prime is 1311022327. The reversal of 1311022312 is 2132201131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37987 + ... + 63757.

It is an arithmetic number, because the mean of its divisors is an integer number (153665550).

Almost surely, 2^1311022312 is an apocalyptic number.

It is an amenable number.

1311022312 is a deficient number, since it is larger than the sum of its proper divisors (1147626488).

1311022312 is a wasteful number, since it uses less digits than its factorization.

1311022312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32136 (or 32132 counting only the distinct ones).

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

The square root of 1311022312 is about 36208.0420901214. The cubic root of 1311022312 is about 1094.4687377920.

Adding to 1311022312 its reverse (2132201131), we get a palindrome (3443223443).

The spelling of 1311022312 in words is "one billion, three hundred eleven million, twenty-two thousand, three hundred twelve".