1283331 has 16 divisors (see below), whose sum is σ = 2041344. Its totient is φ = 701184.

The previous prime is 1283323. The next prime is 1283333. The reversal of 1283331 is 1333821.

1283331 = 144² + 145² + ... + 189².

It is a happy number.

It is not a de Polignac number, because 1283331 - 2³ = 1283323 is a prime.

It is a super-2 number, since 2×1283331² = 3293876911122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1283298 and 1283307.

It is not an unprimeable number, because it can be changed into a prime (1283333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (127584).

2^1283331 is an apocalyptic number.

1283331 is a deficient number, since it is larger than the sum of its proper divisors (758013).

1283331 is a wasteful number, since it uses less digits than its factorization.

1283331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690.

The product of its digits is 432, while the sum is 21.

The square root of 1283331 is about 1132.8420013400. The cubic root of 1283331 is about 108.6708077177.

The spelling of 1283331 in words is "one million, two hundred eighty-three thousand, three hundred thirty-one".