311113443 has 4 divisors (see below), whose sum is σ = 414817928. Its totient is φ = 207408960.

The previous prime is 311113441. The next prime is 311113459. The reversal of 311113443 is 344311113.

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

It is not a de Polignac number, because 311113443 - 2¹ = 311113441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311113441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51852238 + ... + 51852243.

It is an arithmetic number, because the mean of its divisors is an integer number (103704482).

Almost surely, 2^311113443 is an apocalyptic number.

311113443 is a deficient number, since it is larger than the sum of its proper divisors (103704485).

311113443 is a wasteful number, since it uses less digits than its factorization.

311113443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103704484.

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

The square root of 311113443 is about 17638.4081764767. The cubic root of 311113443 is about 677.5992641509.

Adding to 311113443 its reverse (344311113), we get a palindrome (655424556).

The spelling of 311113443 in words is "three hundred eleven million, one hundred thirteen thousand, four hundred forty-three".