1312311120211 has 16 divisors (see below), whose sum is σ = 1667253833728. Its totient is φ = 1004818154400.

The previous prime is 1312311120167. The next prime is 1312311120217. The reversal of 1312311120211 is 1120211132131.

It is a cyclic number.

It is not a de Polignac number, because 1312311120211 - 2²³ = 1312302731603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312311120217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232593975 + ... + 232599616.

It is an arithmetic number, because the mean of its divisors is an integer number (104203364608).

Almost surely, 2^{1312311120211} is an apocalyptic number.

1312311120211 is a deficient number, since it is larger than the sum of its proper divisors (354942713517).

1312311120211 is a wasteful number, since it uses less digits than its factorization.

1312311120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465193642.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1312311120211 its reverse (1120211132131), we get a palindrome (2432522252342).

The spelling of 1312311120211 in words is "one trillion, three hundred twelve billion, three hundred eleven million, one hundred twenty thousand, two hundred eleven".