133321103 has 4 divisors (see below), whose sum is σ = 134170440. Its totient is φ = 132471768.

The previous prime is 133321099. The next prime is 133321117. The reversal of 133321103 is 301123331.

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 133321103 - 2² = 133321099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133321163) 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, 424433 + ... + 424746.

It is an arithmetic number, because the mean of its divisors is an integer number (33542610).

Almost surely, 2^133321103 is an apocalyptic number.

133321103 is a deficient number, since it is larger than the sum of its proper divisors (849337).

133321103 is an equidigital number, since it uses as much as digits as its factorization.

133321103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849336.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133321103 is about 11546.4757826793. The cubic root of 133321103 is about 510.8573340851.

Adding to 133321103 its reverse (301123331), we get a palindrome (434444434).

The spelling of 133321103 in words is "one hundred thirty-three million, three hundred twenty-one thousand, one hundred three".