1230311 has 2 divisors, whose sum is σ = 1230312. Its totient is φ = 1230310.

The previous prime is 1230301. The next prime is 1230329. The reversal of 1230311 is 1130321.

It is a weak prime.

It is an emirp because it is prime and its reverse (1130321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230311 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230292 and 1230301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615155 + 615156.

It is an arithmetic number, because the mean of its divisors is an integer number (615156).

2^1230311 is an apocalyptic number.

1230311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230311 is an equidigital number, since it uses as much as digits as its factorization.

1230311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1230311 is about 1109.1938514074. The cubic root of 1230311 is about 107.1531565126.

Adding to 1230311 its reverse (1130321), we get a palindrome (2360632).

The spelling of 1230311 in words is "one million, two hundred thirty thousand, three hundred eleven".