133531459 has 2 divisors, whose sum is σ = 133531460. Its totient is φ = 133531458.

The previous prime is 133531439. The next prime is 133531471. The reversal of 133531459 is 954135331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133531459 - 2⁵ = 133531427 is a prime.

It is not a weakly prime, because it can be changed into another prime (133531439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66765729 + 66765730.

It is an arithmetic number, because the mean of its divisors is an integer number (66765730).

Almost surely, 2^133531459 is an apocalyptic number.

133531459 is a deficient number, since it is larger than the sum of its proper divisors (1).

133531459 is an equidigital number, since it uses as much as digits as its factorization.

133531459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 34.

The square root of 133531459 is about 11555.5812921722. The cubic root of 133531459 is about 511.1258723088.

The spelling of 133531459 in words is "one hundred thirty-three million, five hundred thirty-one thousand, four hundred fifty-nine".