1331433 has 6 divisors (see below), whose sum is σ = 1923194. Its totient is φ = 887616.

The previous prime is 1331431. The next prime is 1331437. The reversal of 1331433 is 3341331.

It can be written as a sum of positive squares in only one way, i.e., 1272384 + 59049 = 1128^2 + 243^2 .

It is not a de Polignac number, because 1331433 - 2¹ = 1331431 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73960 + ... + 73977.

2^1331433 is an apocalyptic number.

It is an amenable number.

1331433 is a deficient number, since it is larger than the sum of its proper divisors (591761).

1331433 is a wasteful number, since it uses less digits than its factorization.

1331433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147943 (or 147940 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 1331433 is about 1153.8773765006. The cubic root of 1331433 is about 110.0119270814.

Adding to 1331433 its reverse (3341331), we get a palindrome (4672764).

It can be divided in two parts, 1331 and 433, that added together give a square (1764 = 42²).

The spelling of 1331433 in words is "one million, three hundred thirty-one thousand, four hundred thirty-three".