133220031323 has 4 divisors (see below), whose sum is σ = 133220765808. Its totient is φ = 133219296840.

The previous prime is 133220031317. The next prime is 133220031367. The reversal of 133220031323 is 323130022331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 323130022331 = 3083 ⋅104810257.

It is a cyclic number.

It is not a de Polignac number, because 133220031323 - 2¹⁶ = 133219965787 is a prime.

It is a super-2 number, since 2×133220031323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133220031823) 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, 122753 + ... + 530573.

It is an arithmetic number, because the mean of its divisors is an integer number (33305191452).

Almost surely, 2^133220031323 is an apocalyptic number.

133220031323 is a deficient number, since it is larger than the sum of its proper divisors (734485).

133220031323 is an equidigital number, since it uses as much as digits as its factorization.

133220031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734484.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 133220031323 its reverse (323130022331), we get a palindrome (456350053654).

The spelling of 133220031323 in words is "one hundred thirty-three billion, two hundred twenty million, thirty-one thousand, three hundred twenty-three".