133323131009 has 2 divisors, whose sum is σ = 133323131010. Its totient is φ = 133323131008.

The previous prime is 133323130999. The next prime is 133323131017. The reversal of 133323131009 is 900131323331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113094327025 + 20228803984 = 336295^2 + 142228^2 .

It is a cyclic number.

It is not a de Polignac number, because 133323131009 - 2⁸ = 133323130753 is a prime.

It is not a weakly prime, because it can be changed into another prime (133323131089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66661565504 + 66661565505.

It is an arithmetic number, because the mean of its divisors is an integer number (66661565505).

Almost surely, 2^133323131009 is an apocalyptic number.

It is an amenable number.

133323131009 is a deficient number, since it is larger than the sum of its proper divisors (1).

133323131009 is an equidigital number, since it uses as much as digits as its factorization.

133323131009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 29.

The spelling of 133323131009 in words is "one hundred thirty-three billion, three hundred twenty-three million, one hundred thirty-one thousand, nine".