133459231 has 4 divisors (see below), whose sum is σ = 141309792. Its totient is φ = 125608672.

The previous prime is 133459199. The next prime is 133459241. The reversal of 133459231 is 132954331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133459231 - 2⁵ = 133459199 is a prime.

It is a super-2 number, since 2×133459231² = 35622732678222722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133459193 and 133459202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133459241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3925255 + ... + 3925288.

It is an arithmetic number, because the mean of its divisors is an integer number (35327448).

Almost surely, 2^133459231 is an apocalyptic number.

133459231 is a deficient number, since it is larger than the sum of its proper divisors (7850561).

133459231 is an equidigital number, since it uses as much as digits as its factorization.

133459231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850560.

The product of its digits is 9720, while the sum is 31.

The square root of 133459231 is about 11552.4556264026. The cubic root of 133459231 is about 511.0336986290.

The spelling of 133459231 in words is "one hundred thirty-three million, four hundred fifty-nine thousand, two hundred thirty-one".