133943497 has 2 divisors, whose sum is σ = 133943498. Its totient is φ = 133943496.

The previous prime is 133943479. The next prime is 133943507. The reversal of 133943497 is 794349331.

Together with previous prime (133943479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124634896 + 9308601 = 11164^2 + 3051^2 .

It is a cyclic number.

It is not a de Polignac number, because 133943497 - 2¹¹ = 133941449 is a prime.

It is not a weakly prime, because it can be changed into another prime (133943477) 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, 66971748 + 66971749.

It is an arithmetic number, because the mean of its divisors is an integer number (66971749).

Almost surely, 2^133943497 is an apocalyptic number.

It is an amenable number.

133943497 is a deficient number, since it is larger than the sum of its proper divisors (1).

133943497 is an equidigital number, since it uses as much as digits as its factorization.

133943497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The square root of 133943497 is about 11573.3960875795. The cubic root of 133943497 is about 511.6510594939.

The spelling of 133943497 in words is "one hundred thirty-three million, nine hundred forty-three thousand, four hundred ninety-seven".