1351393 has 4 divisors (see below), whose sum is σ = 1354948. Its totient is φ = 1347840.

The previous prime is 1351387. The next prime is 1351397. The reversal of 1351393 is 3931531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3931531 = 41 ⋅95891.

It can be written as a sum of positive squares in 2 ways, for example, as 44944 + 1306449 = 212^2 + 1143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1351393 is a prime.

It is a Duffinian number.

1351393 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1351397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128 + ... + 1993.

It is an arithmetic number, because the mean of its divisors is an integer number (338737).

2^1351393 is an apocalyptic number.

It is an amenable number.

1351393 is a deficient number, since it is larger than the sum of its proper divisors (3555).

1351393 is an equidigital number, since it uses as much as digits as its factorization.

1351393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554.

The product of its digits is 1215, while the sum is 25.

The square root of 1351393 is about 1162.4943010613. The cubic root of 1351393 is about 110.5589456391.

The spelling of 1351393 in words is "one million, three hundred fifty-one thousand, three hundred ninety-three".