133335431 has 2 divisors, whose sum is σ = 133335432. Its totient is φ = 133335430.

The previous prime is 133335421. The next prime is 133335443. The reversal of 133335431 is 134533331.

It is a weak prime.

It is an emirp because it is prime and its reverse (134533331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133335431 - 2¹⁸ = 133073287 is a prime.

It is a super-2 number, since 2×133335431² = 35556674319911522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133335431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133335421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66667715 + 66667716.

It is an arithmetic number, because the mean of its divisors is an integer number (66667716).

Almost surely, 2^133335431 is an apocalyptic number.

133335431 is a deficient number, since it is larger than the sum of its proper divisors (1).

133335431 is an equidigital number, since it uses as much as digits as its factorization.

133335431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 26.

The square root of 133335431 is about 11547.0962150664. The cubic root of 133335431 is about 510.8756340179.

Adding to 133335431 its reverse (134533331), we get a palindrome (267868762).

The spelling of 133335431 in words is "one hundred thirty-three million, three hundred thirty-five thousand, four hundred thirty-one".