133000131320321 has 4 divisors (see below), whose sum is σ = 133000466975700. Its totient is φ = 132999795664944.

The previous prime is 133000131320281. The next prime is 133000131320327. The reversal of 133000131320321 is 123023131000331.

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 119949830569921 + 13050300750400 = 10952161^2 + 3612520^2 .

It is a cyclic number.

It is not a de Polignac number, because 133000131320321 - 2⁶ = 133000131320257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133000131320327) 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, 167232626 + ... + 168026043.

It is an arithmetic number, because the mean of its divisors is an integer number (33250116743925).

Almost surely, 2^{133000131320321} is an apocalyptic number.

It is an amenable number.

133000131320321 is a deficient number, since it is larger than the sum of its proper divisors (335655379).

133000131320321 is an equidigital number, since it uses as much as digits as its factorization.

133000131320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335655378.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 133000131320321 its reverse (123023131000331), we get a palindrome (256023262320652).

The spelling of 133000131320321 in words is "one hundred thirty-three trillion, one hundred thirty-one million, three hundred twenty thousand, three hundred twenty-one".