1311355312 has 20 divisors (see below), whose sum is σ = 2542523776. Its totient is φ = 655220160.

The previous prime is 1311355307. The next prime is 1311355313. The reversal of 1311355312 is 2135531131.

It is not an unprimeable number, because it can be changed into a prime (1311355313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4323 + ... + 51394.

Almost surely, 2^1311355312 is an apocalyptic number.

It is an amenable number.

1311355312 is a deficient number, since it is larger than the sum of its proper divisors (1231168464).

1311355312 is a wasteful number, since it uses less digits than its factorization.

1311355312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57196 (or 57190 counting only the distinct ones).

The product of its digits is 1350, while the sum is 25.

The square root of 1311355312 is about 36212.6402240985. The cubic root of 1311355312 is about 1094.5613950598.

Adding to 1311355312 its reverse (2135531131), we get a palindrome (3446886443).

The spelling of 1311355312 in words is "one billion, three hundred eleven million, three hundred fifty-five thousand, three hundred twelve".