2028311 has 8 divisors (see below), whose sum is σ = 2114448. Its totient is φ = 1944000.

The previous prime is 2028293. The next prime is 2028319. The reversal of 2028311 is 1138202.

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-2028311 is a prime.

It is a super-2 number, since 2×2028311² = 8228091025442, which contains 22 as substring.

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 2028311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096 + ... + 2906.

It is an arithmetic number, because the mean of its divisors is an integer number (264306).

2^2028311 is an apocalyptic number.

2028311 is a deficient number, since it is larger than the sum of its proper divisors (86137).

2028311 is an equidigital number, since it uses as much as digits as its factorization.

2028311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2028311 is about 1424.1878387348. The cubic root of 2028311 is about 126.5838154720.

The spelling of 2028311 in words is "two million, twenty-eight thousand, three hundred eleven".