13381433 has 4 divisors (see below), whose sum is σ = 14410788. Its totient is φ = 12352080.

The previous prime is 13381427. The next prime is 13381463. The reversal of 13381433 is 33418331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1075369 + 12306064 = 1037^2 + 3508^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13381433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13381463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514658 + ... + 514683.

It is an arithmetic number, because the mean of its divisors is an integer number (3602697).

Almost surely, 2^13381433 is an apocalyptic number.

13381433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13381433 is a deficient number, since it is larger than the sum of its proper divisors (1029355).

13381433 is a wasteful number, since it uses less digits than its factorization.

13381433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029354.

The product of its digits is 2592, while the sum is 26.

The square root of 13381433 is about 3658.0641055072. The cubic root of 13381433 is about 237.4110204075.

Adding to 13381433 its reverse (33418331), we get a palindrome (46799764).

The spelling of 13381433 in words is "thirteen million, three hundred eighty-one thousand, four hundred thirty-three".