133332403 has 4 divisors (see below), whose sum is σ = 139129488. Its totient is φ = 127535320.

The previous prime is 133332361. The next prime is 133332431. The reversal of 133332403 is 304233331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304233331 = 139 ⋅2188729.

It is a cyclic number.

It is not a de Polignac number, because 133332403 - 2¹⁷ = 133201331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133332103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2898508 + ... + 2898553.

It is an arithmetic number, because the mean of its divisors is an integer number (34782372).

Almost surely, 2^133332403 is an apocalyptic number.

133332403 is a deficient number, since it is larger than the sum of its proper divisors (5797085).

133332403 is an equidigital number, since it uses as much as digits as its factorization.

133332403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797084.

The product of its (nonzero) digits is 1944, while the sum is 22.

The square root of 133332403 is about 11546.9650991072. The cubic root of 133332403 is about 510.8717667209.

Adding to 133332403 its reverse (304233331), we get a palindrome (437565734).

The spelling of 133332403 in words is "one hundred thirty-three million, three hundred thirty-two thousand, four hundred three".