133031545321 has 4 divisors (see below), whose sum is σ = 135541574532. Its totient is φ = 130521516112.

The previous prime is 133031545319. The next prime is 133031545331. The reversal of 133031545321 is 123545130331.

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 82332268096 + 50699277225 = 286936^2 + 225165^2 .

It is a cyclic number.

It is not a de Polignac number, because 133031545321 - 2¹ = 133031545319 is a prime.

It is a super-3 number, since 3×133031545321³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133031545331) 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, 1255014526 + ... + 1255014631.

It is an arithmetic number, because the mean of its divisors is an integer number (33885393633).

Almost surely, 2^133031545321 is an apocalyptic number.

It is an amenable number.

133031545321 is a deficient number, since it is larger than the sum of its proper divisors (2510029211).

133031545321 is an equidigital number, since it uses as much as digits as its factorization.

133031545321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510029210.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 133031545321 its reverse (123545130331), we get a palindrome (256576675652).

The spelling of 133031545321 in words is "one hundred thirty-three billion, thirty-one million, five hundred forty-five thousand, three hundred twenty-one".