133406131 has 2 divisors, whose sum is σ = 133406132. Its totient is φ = 133406130.

The previous prime is 133406129. The next prime is 133406159. The reversal of 133406131 is 131604331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133406131 - 2¹ = 133406129 is a prime.

It is a super-2 number, since 2×133406131² = 35594391576778322, which contains 22 as substring.

Together with 133406129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133406111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66703065 + 66703066.

It is an arithmetic number, because the mean of its divisors is an integer number (66703066).

Almost surely, 2^133406131 is an apocalyptic number.

133406131 is a deficient number, since it is larger than the sum of its proper divisors (1).

133406131 is an equidigital number, since it uses as much as digits as its factorization.

133406131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 133406131 is about 11550.1571850776. The cubic root of 133406131 is about 510.9659139108.

The spelling of 133406131 in words is "one hundred thirty-three million, four hundred six thousand, one hundred thirty-one".