1311313232 has 40 divisors (see below), whose sum is σ = 2590980000. Its totient is φ = 642736512.

The previous prime is 1311313231. The next prime is 1311313243. The reversal of 1311313232 is 2323131131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311313231) 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, 373019 + ... + 376517.

It is an arithmetic number, because the mean of its divisors is an integer number (64774500).

Almost surely, 2^1311313232 is an apocalyptic number.

It is an amenable number.

1311313232 is a deficient number, since it is larger than the sum of its proper divisors (1279666768).

1311313232 is a wasteful number, since it uses less digits than its factorization.

1311313232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963 (or 3957 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 1311313232 is about 36212.0592068443. The cubic root of 1311313232 is about 1094.5496871635.

Adding to 1311313232 its reverse (2323131131), we get a palindrome (3634444363).

The spelling of 1311313232 in words is "one billion, three hundred eleven million, three hundred thirteen thousand, two hundred thirty-two".