133113403 has 4 divisors (see below), whose sum is σ = 133340760. Its totient is φ = 132886048.

The previous prime is 133113401. The next prime is 133113433. The reversal of 133113403 is 304311331.

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

It is a cyclic number.

It is not a de Polignac number, because 133113403 - 2¹ = 133113401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133113401) 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, 112798 + ... + 113971.

It is an arithmetic number, because the mean of its divisors is an integer number (33335190).

Almost surely, 2^133113403 is an apocalyptic number.

133113403 is a deficient number, since it is larger than the sum of its proper divisors (227357).

133113403 is an equidigital number, since it uses as much as digits as its factorization.

133113403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227356.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 133113403 is about 11537.4781906619. The cubic root of 133113403 is about 510.5919091980.

Adding to 133113403 its reverse (304311331), we get a palindrome (437424734).

The spelling of 133113403 in words is "one hundred thirty-three million, one hundred thirteen thousand, four hundred three".