133771220323 has 4 divisors (see below), whose sum is σ = 144061314208. Its totient is φ = 123481126440.

The previous prime is 133771220311. The next prime is 133771220327. The reversal of 133771220323 is 323022177331.

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 133771220323 - 2²¹ = 133769123171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133771220327) 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, 5145046923 + ... + 5145046948.

It is an arithmetic number, because the mean of its divisors is an integer number (36015328552).

Almost surely, 2^133771220323 is an apocalyptic number.

133771220323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133771220323 is a deficient number, since it is larger than the sum of its proper divisors (10290093885).

133771220323 is a wasteful number, since it uses less digits than its factorization.

133771220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10290093884.

The product of its (nonzero) digits is 31752, while the sum is 34.

Adding to 133771220323 its reverse (323022177331), we get a palindrome (456793397654).

The spelling of 133771220323 in words is "one hundred thirty-three billion, seven hundred seventy-one million, two hundred twenty thousand, three hundred twenty-three".