31104143321311 has 4 divisors (see below), whose sum is σ = 31104304210800. Its totient is φ = 31103982431824.

The previous prime is 31104143321263. The next prime is 31104143321369. The reversal of 31104143321311 is 11312334140113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31104143321311 - 2⁷ = 31104143321183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31104143321311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31104143321711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80154406 + ... + 80541523.

It is an arithmetic number, because the mean of its divisors is an integer number (7776076052700).

Almost surely, 2^{31104143321311} is an apocalyptic number.

31104143321311 is a deficient number, since it is larger than the sum of its proper divisors (160889489).

31104143321311 is a wasteful number, since it uses less digits than its factorization.

31104143321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160889488.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 31104143321311 its reverse (11312334140113), we get a palindrome (42416477461424).

The spelling of 31104143321311 in words is "thirty-one trillion, one hundred four billion, one hundred forty-three million, three hundred twenty-one thousand, three hundred eleven".