311230423 has 4 divisors (see below), whose sum is σ = 355691920. Its totient is φ = 266768928.

The previous prime is 311230333. The next prime is 311230429. The reversal of 311230423 is 324032113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324032113 = 6551 ⋅49463.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311230423 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 311230423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311230429) 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 3 ways as a sum of consecutive naturals, for example, 22230738 + ... + 22230751.

It is an arithmetic number, because the mean of its divisors is an integer number (88922980).

Almost surely, 2^311230423 is an apocalyptic number.

311230423 is a deficient number, since it is larger than the sum of its proper divisors (44461497).

311230423 is an equidigital number, since it uses as much as digits as its factorization.

311230423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44461496.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 311230423 is about 17641.7239236986. The cubic root of 311230423 is about 677.6841802601.

Adding to 311230423 its reverse (324032113), we get a palindrome (635262536).

The spelling of 311230423 in words is "three hundred eleven million, two hundred thirty thousand, four hundred twenty-three".