1285319 has 12 divisors (see below), whose sum is σ = 1584144. Its totient is φ = 1036224.

The previous prime is 1285301. The next prime is 1285351. The reversal of 1285319 is 9135821.

It is not a de Polignac number, because 1285319 - 2¹⁶ = 1219783 is a prime.

It is a super-2 number, since 2×1285319² = 3304089863522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1285291 and 1285300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62 + ... + 1604.

It is an arithmetic number, because the mean of its divisors is an integer number (132012).

2^1285319 is an apocalyptic number.

1285319 is a deficient number, since it is larger than the sum of its proper divisors (298825).

1285319 is a wasteful number, since it uses less digits than its factorization.

1285319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1567 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

The square root of 1285319 is about 1133.7191010122. The cubic root of 1285319 is about 108.7268925229.

The spelling of 1285319 in words is "one million, two hundred eighty-five thousand, three hundred nineteen".