1231433 has 4 divisors (see below), whose sum is σ = 1407360. Its totient is φ = 1055508.

The previous prime is 1231423. The next prime is 1231453. The reversal of 1231433 is 3341321.

It is a happy number.

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: 3341321 = 19 ⋅175859.

It is a cyclic number.

It is not a de Polignac number, because 1231433 - 2⁸ = 1231177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231423) 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, 87953 + ... + 87966.

It is an arithmetic number, because the mean of its divisors is an integer number (351840).

2^1231433 is an apocalyptic number.

It is an amenable number.

1231433 is a deficient number, since it is larger than the sum of its proper divisors (175927).

1231433 is an equidigital number, since it uses as much as digits as its factorization.

1231433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175926.

The product of its digits is 216, while the sum is 17.

The square root of 1231433 is about 1109.6995088762. The cubic root of 1231433 is about 107.1857199086.

Adding to 1231433 its reverse (3341321), we get a palindrome (4572754).

The spelling of 1231433 in words is "one million, two hundred thirty-one thousand, four hundred thirty-three".