1328311 has 2 divisors, whose sum is σ = 1328312. Its totient is φ = 1328310.

The previous prime is 1328297. The next prime is 1328317. The reversal of 1328311 is 1138231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328311 - 2⁵ = 1328279 is a prime.

It is a super-2 number, since 2×1328311² = 3528820225442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664155 + 664156.

It is an arithmetic number, because the mean of its divisors is an integer number (664156).

2^1328311 is an apocalyptic number.

1328311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328311 is an equidigital number, since it uses as much as digits as its factorization.

1328311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 1328311 is about 1152.5237524667. The cubic root of 1328311 is about 109.9258729233.

The spelling of 1328311 in words is "one million, three hundred twenty-eight thousand, three hundred eleven".