1131311213312 has 36 divisors (see below), whose sum is σ = 2580803709456. Its totient is φ = 484847662080.

The previous prime is 1131311213299. The next prime is 1131311213363. The reversal of 1131311213312 is 2133121131311.

It is a super-2 number, since 2×1131311213312² (a number of 25 digits) contains 22 as substring.

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, 315654239 + ... + 315657822.

Almost surely, 2^{1131311213312} is an apocalyptic number.

It is an amenable number.

1131311213312 is an abundant number, since it is smaller than the sum of its proper divisors (1449492496144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131311213312 is an frugal number, since it uses more digits than its factorization.

1131311213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631312084 (or 631312070 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

Adding to 1131311213312 its reverse (2133121131311), we get a palindrome (3264432344623).

The spelling of 1131311213312 in words is "one trillion, one hundred thirty-one billion, three hundred eleven million, two hundred thirteen thousand, three hundred twelve".