133280923 has 2 divisors, whose sum is σ = 133280924. Its totient is φ = 133280922.

The previous prime is 133280921. The next prime is 133280957. The reversal of 133280923 is 329082331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133280923 - 2¹ = 133280921 is a prime.

Together with 133280921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133280921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66640461 + 66640462.

It is an arithmetic number, because the mean of its divisors is an integer number (66640462).

Almost surely, 2^133280923 is an apocalyptic number.

133280923 is a deficient number, since it is larger than the sum of its proper divisors (1).

133280923 is an equidigital number, since it uses as much as digits as its factorization.

133280923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 133280923 is about 11544.7357267284. The cubic root of 133280923 is about 510.8060086019.

The spelling of 133280923 in words is "one hundred thirty-three million, two hundred eighty thousand, nine hundred twenty-three".