311320403103 has 8 divisors (see below), whose sum is σ = 415461540400. Its totient is φ = 207363100608.

The previous prime is 311320403063. The next prime is 311320403117. The reversal of 311320403103 is 301304023113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311320403103 - 2¹² = 311320399007 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 311320403103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311320403503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45954748 + ... + 45961521.

It is an arithmetic number, because the mean of its divisors is an integer number (51932692550).

Almost surely, 2^311320403103 is an apocalyptic number.

311320403103 is a deficient number, since it is larger than the sum of its proper divisors (104141137297).

311320403103 is a wasteful number, since it uses less digits than its factorization.

311320403103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91917401.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 311320403103 its reverse (301304023113), we get a palindrome (612624426216).

The spelling of 311320403103 in words is "three hundred eleven billion, three hundred twenty million, four hundred three thousand, one hundred three".