1312231032011 has 16 divisors (see below), whose sum is σ = 1338837336000. Its totient is φ = 1285939150848.

The previous prime is 1312231031911. The next prime is 1312231032017. The reversal of 1312231032011 is 1102301322131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1312231032011 - 2¹⁸ = 1312230769867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312231032017) 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, 4407581 + ... + 4695873.

It is an arithmetic number, because the mean of its divisors is an integer number (83677333500).

Almost surely, 2^{1312231032011} is an apocalyptic number.

1312231032011 is a deficient number, since it is larger than the sum of its proper divisors (26606303989).

1312231032011 is a wasteful number, since it uses less digits than its factorization.

1312231032011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288838.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312231032011 its reverse (1102301322131), we get a palindrome (2414532354142).

The spelling of 1312231032011 in words is "one trillion, three hundred twelve billion, two hundred thirty-one million, thirty-two thousand, eleven".