1312023321211 has 32 divisors (see below), whose sum is σ = 1363855933440. Its totient is φ = 1261450713600.

The previous prime is 1312023321121. The next prime is 1312023321241. The reversal of 1312023321211 is 1121233202131.

It is a cyclic number.

It is not a de Polignac number, because 1312023321211 - 2¹¹ = 1312023319163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312023321241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260371230 + ... + 260376268.

It is an arithmetic number, because the mean of its divisors is an integer number (42620497920).

Almost surely, 2^{1312023321211} is an apocalyptic number.

1312023321211 is a deficient number, since it is larger than the sum of its proper divisors (51832612229).

1312023321211 is a wasteful number, since it uses less digits than its factorization.

1312023321211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1312023321211 its reverse (1121233202131), we get a palindrome (2433256523342).

The spelling of 1312023321211 in words is "one trillion, three hundred twelve billion, twenty-three million, three hundred twenty-one thousand, two hundred eleven".