1363381 has 2 divisors, whose sum is σ = 1363382. Its totient is φ = 1363380.

The previous prime is 1363367. The next prime is 1363393. The reversal of 1363381 is 1833631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 707281 + 656100 = 841^2 + 810^2 .

It is an emirp because it is prime and its reverse (1833631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1363381 - 2⁹ = 1362869 is a prime.

It is a super-2 number, since 2×1363381² = 3717615502322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1363301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 681690 + 681691.

It is an arithmetic number, because the mean of its divisors is an integer number (681691).

2^1363381 is an apocalyptic number.

It is an amenable number.

1363381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1363381 is an equidigital number, since it uses as much as digits as its factorization.

1363381 is an evil number, because the sum of its binary digits is even.

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

The square root of 1363381 is about 1167.6390709462. The cubic root of 1363381 is about 110.8849008469.

The spelling of 1363381 in words is "one million, three hundred sixty-three thousand, three hundred eighty-one".