133131033322321 has 4 divisors (see below), whose sum is σ = 133508175060132. Its totient is φ = 132753891584512.

The previous prime is 133131033322319. The next prime is 133131033322367. The reversal of 133131033322321 is 123223330131331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 86815713075025 + 46315320247296 = 9317495^2 + 6805536^2 .

It is a cyclic number.

It is not a de Polignac number, because 133131033322321 - 2¹ = 133131033322319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133131033362321) 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, 188570868376 + ... + 188570869081.

It is an arithmetic number, because the mean of its divisors is an integer number (33377043765033).

Almost surely, 2^{133131033322321} is an apocalyptic number.

It is an amenable number.

133131033322321 is a deficient number, since it is larger than the sum of its proper divisors (377141737811).

133131033322321 is an equidigital number, since it uses as much as digits as its factorization.

133131033322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377141737810.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 133131033322321 its reverse (123223330131331), we get a palindrome (256354363453652).

The spelling of 133131033322321 in words is "one hundred thirty-three trillion, one hundred thirty-one billion, thirty-three million, three hundred twenty-two thousand, three hundred twenty-one".