1336381 has 4 divisors (see below), whose sum is σ = 1345500. Its totient is φ = 1327264.

The previous prime is 1336343. The next prime is 1336393. The reversal of 1336381 is 1836331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 403225 + 933156 = 635^2 + 966^2 .

It is a cyclic number.

It is not a de Polignac number, because 1336381 - 2⁷ = 1336253 is a prime.

It is a super-2 number, since 2×1336381² = 3571828354322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1336481) 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, 4336 + ... + 4633.

It is an arithmetic number, because the mean of its divisors is an integer number (336375).

2^1336381 is an apocalyptic number.

It is an amenable number.

1336381 is a deficient number, since it is larger than the sum of its proper divisors (9119).

1336381 is an equidigital number, since it uses as much as digits as its factorization.

1336381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118.

The product of its digits is 1296, while the sum is 25.

The square root of 1336381 is about 1156.0194635040. The cubic root of 1336381 is about 110.1480375968.

The spelling of 1336381 in words is "one million, three hundred thirty-six thousand, three hundred eighty-one".