1380311 has 4 divisors (see below), whose sum is σ = 1399824. Its totient is φ = 1360800.

The previous prime is 1380307. The next prime is 1380317. The reversal of 1380311 is 1130831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1380311 - 2² = 1380307 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 1380311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9650 + ... + 9791.

It is an arithmetic number, because the mean of its divisors is an integer number (349956).

2^1380311 is an apocalyptic number.

1380311 is a deficient number, since it is larger than the sum of its proper divisors (19513).

1380311 is an equidigital number, since it uses as much as digits as its factorization.

1380311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19512.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1380311 is about 1174.8663753806. The cubic root of 1380311 is about 111.3419909921.

The spelling of 1380311 in words is "one million, three hundred eighty thousand, three hundred eleven".