1366331 has 4 divisors (see below), whose sum is σ = 1386792. Its totient is φ = 1345872.

The previous prime is 1366327. The next prime is 1366333. The reversal of 1366331 is 1336631.

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 1366331 - 2² = 1366327 is a prime.

It is a super-2 number, since 2×1366331² = 3733720803122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1366297 and 1366306.

It is not an unprimeable number, because it can be changed into a prime (1366333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10130 + ... + 10263.

It is an arithmetic number, because the mean of its divisors is an integer number (346698).

2^1366331 is an apocalyptic number.

1366331 is a deficient number, since it is larger than the sum of its proper divisors (20461).

1366331 is an equidigital number, since it uses as much as digits as its factorization.

1366331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460.

The product of its digits is 972, while the sum is 23.

The square root of 1366331 is about 1168.9016211812. The cubic root of 1366331 is about 110.9648185450.

The spelling of 1366331 in words is "one million, three hundred sixty-six thousand, three hundred thirty-one".