133340403 has 8 divisors (see below), whose sum is σ = 203185408. Its totient is φ = 76194504.

The previous prime is 133340351. The next prime is 133340429. The reversal of 133340403 is 304043331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133340403 - 2¹⁴ = 133324019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6349543 = 133340403 / (1 + 3 + 3 + 3 + 4 + 0 + 4 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133340403.

It is not an unprimeable number, because it can be changed into a prime (133340443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3174751 + ... + 3174792.

It is an arithmetic number, because the mean of its divisors is an integer number (25398176).

Almost surely, 2^133340403 is an apocalyptic number.

133340403 is a deficient number, since it is larger than the sum of its proper divisors (69845005).

133340403 is an equidigital number, since it uses as much as digits as its factorization.

133340403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6349553.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133340403 is about 11547.3115052812. The cubic root of 133340403 is about 510.8819840232.

Adding to 133340403 its reverse (304043331), we get a palindrome (437383734).

The spelling of 133340403 in words is "one hundred thirty-three million, three hundred forty thousand, four hundred three".