12311020311302 has 16 divisors (see below), whose sum is σ = 18515984762880. Its totient is φ = 6139047040392.

The previous prime is 12311020311299. The next prime is 12311020311329. The reversal of 12311020311302 is 20311302011321.

It is a happy number.

It is a super-2 number, since 2×12311020311302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4274318 + ... + 6549185.

It is an arithmetic number, because the mean of its divisors is an integer number (1157249047680).

Almost surely, 2^{12311020311302} is an apocalyptic number.

12311020311302 is a deficient number, since it is larger than the sum of its proper divisors (6204964451578).

12311020311302 is a wasteful number, since it uses less digits than its factorization.

12311020311302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10825027.

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

Adding to 12311020311302 its reverse (20311302011321), we get a palindrome (32622322322623).

The spelling of 12311020311302 in words is "twelve trillion, three hundred eleven billion, twenty million, three hundred eleven thousand, three hundred two".