1285383 has 12 divisors (see below), whose sum is σ = 1884344. Its totient is φ = 778800.

The previous prime is 1285381. The next prime is 1285393. The reversal of 1285383 is 3835821.

It is a happy number.

It is not a de Polignac number, because 1285383 - 2¹ = 1285381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1285383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285381) 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 11 ways as a sum of consecutive naturals, for example, 1408 + ... + 2133.

2^1285383 is an apocalyptic number.

1285383 is a deficient number, since it is larger than the sum of its proper divisors (598961).

1285383 is a wasteful number, since it uses less digits than its factorization.

1285383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566 (or 3555 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 1285383 is about 1133.7473263475. The cubic root of 1285383 is about 108.7286971088.

It can be divided in two parts, 12 and 85383, that multiplied together give a triangular number (1024596 = T₁₄₃₁).

The spelling of 1285383 in words is "one million, two hundred eighty-five thousand, three hundred eighty-three".