311440304013421 has 16 divisors (see below), whose sum is σ = 351509643676800. Its totient is φ = 273332670811200.

The previous prime is 311440304013413. The next prime is 311440304013427. The reversal of 311440304013421 is 124310403044113.

It is not a de Polignac number, because 311440304013421 - 2³ = 311440304013413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311440304013427) 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 15 ways as a sum of consecutive naturals, for example, 54150081 + ... + 59624758.

It is an arithmetic number, because the mean of its divisors is an integer number (21969352729800).

Almost surely, 2^{311440304013421} is an apocalyptic number.

It is an amenable number.

311440304013421 is a deficient number, since it is larger than the sum of its proper divisors (40069339663379).

311440304013421 is a wasteful number, since it uses less digits than its factorization.

311440304013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113783460.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 311440304013421 its reverse (124310403044113), we get a palindrome (435750707057534).

The spelling of 311440304013421 in words is "three hundred eleven trillion, four hundred forty billion, three hundred four million, thirteen thousand, four hundred twenty-one".