2311302321012 has 24 divisors (see below), whose sum is σ = 5400297233856. Its totient is φ = 769397180608.

The previous prime is 2311302320993. The next prime is 2311302321019. The reversal of 2311302321012 is 2101232031132.

It is a self number, because there is not a number n which added to its sum of digits gives 2311302321012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311302321019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129606513 + ... + 129624344.

It is an arithmetic number, because the mean of its divisors is an integer number (225012384744).

Almost surely, 2^{2311302321012} is an apocalyptic number.

It is an amenable number.

2311302321012 is an abundant number, since it is smaller than the sum of its proper divisors (3088994912844).

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

2311302321012 is a wasteful number, since it uses less digits than its factorization.

2311302321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259231607 (or 259231605 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2311302321012 its reverse (2101232031132), we get a palindrome (4412534352144).

The spelling of 2311302321012 in words is "two trillion, three hundred eleven billion, three hundred two million, three hundred twenty-one thousand, twelve".