1331233 has 4 divisors (see below), whose sum is σ = 1374208. Its totient is φ = 1288260.

The previous prime is 1331227. The next prime is 1331243. The reversal of 1331233 is 3321331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3321331 = 13 ⋅255487.

It is a cyclic number.

It is not a de Polignac number, because 1331233 - 2¹³ = 1323041 is a prime.

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, 21441 + ... + 21502.

It is an arithmetic number, because the mean of its divisors is an integer number (343552).

2^1331233 is an apocalyptic number.

It is an amenable number.

1331233 is a deficient number, since it is larger than the sum of its proper divisors (42975).

1331233 is an equidigital number, since it uses as much as digits as its factorization.

1331233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42974.

The product of its digits is 162, while the sum is 16.

The square root of 1331233 is about 1153.7907089243. The cubic root of 1331233 is about 110.0064183583.

Adding to 1331233 its reverse (3321331), we get a palindrome (4652564).

The spelling of 1331233 in words is "one million, three hundred thirty-one thousand, two hundred thirty-three".