311143423 has 8 divisors (see below), whose sum is σ = 313107120. Its totient is φ = 309186240.

The previous prime is 311143409. The next prime is 311143429. The reversal of 311143423 is 324341113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311143423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311143394 and 311143403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311143429) 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, 121668 + ... + 124198.

It is an arithmetic number, because the mean of its divisors is an integer number (39138390).

Almost surely, 2^311143423 is an apocalyptic number.

311143423 is a deficient number, since it is larger than the sum of its proper divisors (1963697).

311143423 is a wasteful number, since it uses less digits than its factorization.

311143423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257.

The product of its digits is 864, while the sum is 22.

The square root of 311143423 is about 17639.2580059366. The cubic root of 311143423 is about 677.6210287451.

Adding to 311143423 its reverse (324341113), we get a palindrome (635484536).

The spelling of 311143423 in words is "three hundred eleven million, one hundred forty-three thousand, four hundred twenty-three".