1351403 has 2 divisors, whose sum is σ = 1351404. Its totient is φ = 1351402.

The previous prime is 1351397. The next prime is 1351417. The reversal of 1351403 is 3041531.

It is a weak prime.

It is an emirp because it is prime and its reverse (3041531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1351403 - 2⁴ = 1351387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351423) 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 as a sum of consecutive naturals, namely, 675701 + 675702.

It is an arithmetic number, because the mean of its divisors is an integer number (675702).

2^1351403 is an apocalyptic number.

1351403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351403 is an equidigital number, since it uses as much as digits as its factorization.

1351403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1351403 is about 1162.4986021497. The cubic root of 1351403 is about 110.5592183421.

Adding to 1351403 its reverse (3041531), we get a palindrome (4392934).

The spelling of 1351403 in words is "one million, three hundred fifty-one thousand, four hundred three".