2078311 has 2 divisors, whose sum is σ = 2078312. Its totient is φ = 2078310.

The previous prime is 2078309. The next prime is 2078317. The reversal of 2078311 is 1138702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2078311 - 2¹ = 2078309 is a prime.

It is a super-2 number, since 2×2078311² = 8638753225442, which contains 22 as substring.

Together with 2078309, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039155 + 1039156.

It is an arithmetic number, because the mean of its divisors is an integer number (1039156).

2^2078311 is an apocalyptic number.

2078311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078311 is an equidigital number, since it uses as much as digits as its factorization.

2078311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 2078311 is about 1441.6348358721. The cubic root of 2078311 is about 127.6155251793.

The spelling of 2078311 in words is "two million, seventy-eight thousand, three hundred eleven".