133304531 has 8 divisors (see below), whose sum is σ = 141371424. Its totient is φ = 125262720.

The previous prime is 133304519. The next prime is 133304539. The reversal of 133304531 is 135403331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133304531 - 2²⁶ = 66195667 is a prime.

It is a super-2 number, since 2×133304531² = 35540195970259922, 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 = 133304497 and 133304506.

It is not an unprimeable number, because it can be changed into a prime (133304539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306 + ... + 17168.

It is an arithmetic number, because the mean of its divisors is an integer number (17671428).

Almost surely, 2^133304531 is an apocalyptic number.

133304531 is a deficient number, since it is larger than the sum of its proper divisors (8066893).

133304531 is a wasteful number, since it uses less digits than its factorization.

133304531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12541.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 133304531 is about 11545.7581388144. The cubic root of 133304531 is about 510.8361664471.

Adding to 133304531 its reverse (135403331), we get a palindrome (268707862).

The spelling of 133304531 in words is "one hundred thirty-three million, three hundred four thousand, five hundred thirty-one".