1331283 has 4 divisors (see below), whose sum is σ = 1775048. Its totient is φ = 887520.

The previous prime is 1331279. The next prime is 1331293. The reversal of 1331283 is 3821331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1331283 - 2² = 1331279 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331243) 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, 221878 + ... + 221883.

It is an arithmetic number, because the mean of its divisors is an integer number (443762).

2^1331283 is an apocalyptic number.

1331283 is a deficient number, since it is larger than the sum of its proper divisors (443765).

1331283 is an equidigital number, since it uses as much as digits as its factorization.

1331283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443764.

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

The square root of 1331283 is about 1153.8123764287. The cubic root of 1331283 is about 110.0077955908.

It can be divided in two parts, 1331 and 283, that multiplied together give a palindrome (376673).

The spelling of 1331283 in words is "one million, three hundred thirty-one thousand, two hundred eighty-three".