1381435303 has 4 divisors (see below), whose sum is σ = 1382895000. Its totient is φ = 1379975608.

The previous prime is 1381435291. The next prime is 1381435309. The reversal of 1381435303 is 3035341831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3035341831 = 401 ⋅7569431.

It is a cyclic number.

It is not a de Polignac number, because 1381435303 - 2¹³ = 1381427111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381435309) 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, 728428 + ... + 730321.

It is an arithmetic number, because the mean of its divisors is an integer number (345723750).

Almost surely, 2^1381435303 is an apocalyptic number.

1381435303 is a deficient number, since it is larger than the sum of its proper divisors (1459697).

1381435303 is an equidigital number, since it uses as much as digits as its factorization.

1381435303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459696.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1381435303 is about 37167.6647504252. The cubic root of 1381435303 is about 1113.7221320573.

The spelling of 1381435303 in words is "one billion, three hundred eighty-one million, four hundred thirty-five thousand, three hundred three".